Rolex serial numbers by year: lookup, charts and reference number guide

A Rolex serial number is the unique code engraved on every Rolex, and on watches made before 2010 it tells you roughly when the case was produced. Enter yours in the lookup below to get an estimated year, the era it belongs to, and where that number sits on a watch of that age. If your serial is a scrambled string of eight characters, the watch was made after 2010 and no chart will date it, so use the section on dating a modern Rolex instead. Everything else is here too: the full 1926 to 2010 chart, reference number decoding, clasp codes, country codes, and the marks Rolex added to cases and crystals along the way.

What a Rolex serial number is

A Rolex serial number identifies one individual watch. It runs four to eight characters, Rolex engraves it at the factory, and no two watches share one.

The reference number is a different thing. It identifies the model and configuration, so every steel Submariner Date with a black Cerachrom bezel built since 2020 carries 126610LN, and each of those watches has its own serial underneath it.

Together they answer two questions. The reference tells you what the watch is. The serial suggests when its case was made. Neither one establishes that a watch is genuine, which is covered further down the page.

Where to find the serial number on a Rolex

Where the serial sits depends on when the watch was made. On anything built before 2005 it is engraved into the case edge between the lugs at 6 o'clock, hidden under the bracelet. From 2005 Rolex also laser-etched it onto the rehaut, the inner ring that sits between the dial and the crystal, so it could be read without touching the bracelet at all. By 2008 the case engraving had been dropped and the rehaut was the only place it appeared.

The reference number is engraved between the lugs at 12 o'clock, at the opposite end of the case, and it stayed there through every era. So on a modern watch the serial is easy to read and the reference still means taking the bracelet off. The faster route is usually the warranty card, the papers or the original listing, all of which carry the reference in print.

The three eras of Rolex serial numbers

Rolex has used three numbering systems, and only the first two can be read as a date. Plain numeric serials ran from 1926 to the middle of 1987. A letter followed by six digits ran from 1987 to 2010. Everything since is a scrambled eight-character string that carries no date information at all.

Sequential numbers, 1926 to mid-1987

For sixty years Rolex simply counted. Numbers started in the tens of thousands in the 1920s and climbed, so a higher number means a later watch and the chart reads straight down.

With one break in it. In the early 1950s the count reached 999,999, and rather than move to a seven-digit number Rolex reset it and started again from a low figure. That is why the published charts look broken at that point: 1953 begins in the 800,000s, and 1954 begins around 23,000. Nothing is wrong with the chart. The counter went back to the beginning. The sequence passed a million again in 1964 and ran on to roughly 9,400,000 by the time the letters arrived in 1987.

The reset has a practical consequence that most lookup tools ignore. Any serial below about 856,000 fits two different years, one before the reset and one after, so the honest answer is two candidates rather than one. The lookup at the top of this page returns both and lets the watch itself settle which is right, because a 1940s Oyster and a 1950s Datejust are not easy to confuse once you have them in hand.

Sources also disagree on the exact figure the count restarted from, and a handful of years between the 1920s and the 1950s have no reliably recorded starting number at all. For a watch from that period the serial narrows the window and the case, dial, movement and bracelet close it.

Letter prefixes, mid-1987 to 2010

In 1987 Rolex switched to a single letter followed by six digits. The letters did not start at A. They ran R, then L, then E, then X, which spells ROLEX without the O, and collectors have read it that way ever since.

After that the order stops being a word and stops being alphabetical. N, C and S appeared through the early and middle 1990s, then W, T and U. A, P, K and Y carried into the early 2000s, and F, D, Z, M, V and G ran to 2010. The series overlapped rather than handing over cleanly, so more than one prefix was in use at a time and a prefix maps to a period rather than to a single year.

Rolex never issued B, I, J, O or Q as serial prefixes. Those letters are associated with Tudor cases instead, so a letter-prefix Rolex carrying one of them is worth a much closer look.

Random serials, 2010 onward

Around 2010 Rolex moved to eight-character serials that mix letters and numbers in no particular order, and no chart can date them. Two reasons are generally accepted for the change. Scrambled serials are harder for counterfeiters to imitate convincingly, and they stop anyone reading Rolex production volumes off the numbering.

The changeover was not clean. G-prefix watches and random serials were both being issued in the same period, and some random serials happen to begin with a letter, including J, O and Q, which makes them easy to mistake for an old prefix serial. If a serial is eight characters long and the letters sit anywhere other than the front, it is a random serial and the year has to come from somewhere else.

Rolex serial number chart by year

Match your serial against the chart to find its production year. Each figure marks roughly where that year's production began, so a serial sitting between two entries belongs to the earlier of the two. Filter the table to jump straight to a number or a year.

Three things in that data are worth knowing about rather than glossing over. The 1953 and 1954 rows look wrong because of the sequence reset described above. The 1977 and 1978 figures appear inverted in every widely published version of this chart, and no source explains why, so both are shown as recorded. And 1929, 1931, 1949 and 1950 have no reliably recorded starting number, which is why those rows are blank rather than filled with a guess.

Rolex letter prefix chart

If your serial starts with a letter, this table gives the period that letter was in use. Treat these as overlapping ranges rather than exact calendar years, because Rolex ran several series at once.

Why the chart is an estimate

Every Rolex serial chart in circulation, including this one, is an estimate. Rolex has never published a serial calendar for the public, and there is no official database anyone can query. What exists is data compiled by collectors, dealers and auction houses over decades from watches with dated papers, cross-checked against each other until a consensus formed.

That consensus is good. It is not exact, and four things stop it being exact.

Cases were made in batches and stored before assembly, so a case cut in one year could leave Switzerland in the next one, or the one after that. Transitions between series happened mid-year rather than on 1 January. Precious metal and gem-set references sold more slowly and often sat at a dealer far longer than a steel sports model, which widens the gap between production and purchase. And the letter-prefix series ran concurrently, so a prefix points at a period rather than a year.

The practical version: a serial gives you a window of about one to two years on when the case was made. Anyone quoting an exact production date from a serial alone is telling you more than the data supports.

Dating a Rolex made after 2010

A Rolex with a random serial has to be dated from evidence other than the number, and there are five sources worth working through in order. None of them is as tidy as a chart, and together they usually get close.

The warranty card

The warranty card is the strongest evidence, because it carries a date. What it records is the date the watch was sold, not the date it was made, and those can sit more than a year apart. The card format has changed three times, which is itself a dating clue.

Which means a modern Rolex with no card loses its most direct dating evidence, and the remaining four sources become the answer rather than the backup.

The other four sources

The reference production window. A reference only existed between certain years, so the reference brackets the watch on its own. A 116610LN cannot predate 2010 or postdate 2020, whatever else is unknown about it. The reference database further down this page gives the window for more than three hundred references.

Generation markers. Case size, bezel material, bracelet design, clasp type, dial text and lume all changed at known points. A 41mm Submariner is 2020 or later. A Cerachrom bezel on a Submariner Date puts it at 2010 or later. Chromalight replaced Super-LumiNova through the late 2000s. Enough of these together narrow a watch to a couple of years.

The clasp code. Stamped inside the clasp hinge and covered in the next section. Read it as evidence about the bracelet, not the watch, because bracelets get replaced.

The calibre. Movements have their own production windows, and a calibre that postdates the rest of the watch is a real inconsistency rather than a curiosity. The calibre table further down gives the ranges.

Rolex clasp codes

Many Rolex bracelets carry a code stamped inside the clasp hinge. The letter is the year and the number is the month, so a clasp stamped G4 was made in April 1982. An additional S means a service replacement bracelet.

Read this as the date of the bracelet and nothing more. Bracelets get swapped over a watch's life, and a clasp code that disagrees with the serial usually means a replacement bracelet rather than a problem with the watch.

Rolex reference numbers explained

A Rolex reference number describes the watch. Where the serial identifies one individual piece, the reference tells you the model, the bezel, the case material and often the exact colour configuration, and every watch built to that specification carries the same one.

That is why searching by reference finds what you actually want. Rolex changes case proportions, bezels, movements, clasps and dials without changing the model name, so a Submariner is not a useful search and 126610LN is.

Four digits, five digits, six digits

References got longer as the catalogue grew. Four digits covers the vintage era, roughly the 1940s to the 1960s, and those early numbers do not follow the modern logic reliably. Five digits arrived in the 1970s and ran to the 2000s. Six digits is the modern standard.

The generational trick is worth knowing. When Rolex updates a model it often adds a digit to the front of the existing reference rather than inventing a new one. The Explorer II 16570 became 216570. The Submariner Date 16610 became 116610LN and then 126610LN. Read the leading digits and you are reading the generation.

The anatomy of a reference

On most five and six digit references the number breaks into three parts. The leading digits give the model family, the second-to-last digit gives the bezel, and the last digit gives the case material. Any letters on the end describe the bezel colour or the stones set into it.

The system holds for most modern references and it is not universal. Four-digit vintage references frequently ignore it, dress models vary, and Rolex has reused codes across generations. Use it to read a reference quickly, then confirm against the reference database rather than treating the arithmetic as final.

Rolex reference number decoder

Enter any reference. If it is in the database you get the model, the production window and the nickname. If it is not, the tool reads the numbering pattern instead and tells you it is doing so.

Model family, bezel and material codes

The leading digits identify the model. Several families share codes across different eras and case sizes, so a code that appears twice below is not an error.

The second-to-last digit gives the bezel on most five and six digit references.

The final digit gives the case material, and on a watch with a metal bracelet it gives the bracelet material too. Rolesor is Rolex's own term for steel combined with gold, and Rolesium for steel combined with platinum.

Rolex reference suffix letters

Letters on the end of a reference describe the bezel, the crystal or the stones. Nearly all of them are abbreviated French, which is the working language of a Geneva company, so once you know that LN is lunette noire the rest fall into place quickly.

Rolex reference number database

Search the database by reference, model or nickname, or filter it by family. It covers more than three hundred references from the 1940s to the current catalogue, with the production window for each one. Those windows are the fastest way to date a modern Rolex, because a reference that ran from 2010 to 2020 puts a hard bracket around the watch no matter what the serial says.

Rolex nicknames and their reference numbers

Collector nicknames are not official and Rolex has never used one. They stuck anyway, and in practice they are how most of these watches get discussed, bought and searched for. Here is what each one actually refers to.

Rolex calibres by generation

Movements have production windows of their own, which makes the calibre a useful cross-check on any claimed date. A calibre that postdates the rest of the watch is worth resolving before anything else.

Other date-bearing marks on a Rolex

The serial is not the only mark on a Rolex that carries information. Four others are worth knowing, and on a watch with no papers they are sometimes all you have.

Country codes on guarantee papers

Older Rolex guarantee certificates carry a three-digit code in the upper left corner showing the market the watch was first sold into. They are rare before 1980, and United States paperwork generally used 710 for the whole country rather than breaking it down further.

The code belongs to the paperwork, not to the watch. It says where a watch was sold, not where or when it was made.

Red letters on older United States papers

Some older United States Rolex papers carry red letters stamped on the certificate, recording when Rolex USA shipped the watch to a dealer. The cipher is the phrase ROLEX WATCH, where each letter stands for a digit: R is 1, O is 2, L is 3, E is 4, X is 5, W is 6, A is 7, T is 8, C is 9 and H is 0. A stamp reading L RCCT decodes to 3 1998, or 19 March 1998.

This only applies to certain older watches with original United States papers, and it is a supporting detail rather than proof of anything on its own.

The laser-etched crown on the crystal

From around 2001 and 2002 Rolex began laser-etching a tiny crown into the crystal at 6 o'clock. It is very small, it is easiest to see when light catches it at an angle, and it was rolled out model by model rather than all at once, starting with the no-date Submariner, Air-King, Explorer and Daytona. The Milgauss with the green crystal is the exception that never carried it. Its absence on a pre-2002 watch is completely normal.

The engraved rehaut

The rehaut is the inner flange between the dial and the crystal. From 2004, and commonly from 2005, Rolex began engraving it with the word ROLEX repeated around the ring, a crown at 12 o'clock and the serial number at 6 o'clock. By 2008 every Oyster reference had it. On a genuine watch the repeated text lines up precisely with the minute markers and the spacing is even the whole way round.

Sapphire crystal transition years

Rolex replaced acrylic crystals with sapphire model by model over roughly fifteen years, so the crystal type is a rough date check. A model wearing the wrong crystal for its claimed year is worth a second look.

What a serial number cannot tell you

A serial number identifies an individual watch and suggests when its case was made. That is the whole of what it does.

It does not establish that a watch is genuine, and three facts explain why. Rolex publishes no serial database that a buyer can check a number against, so there is nothing to verify it with. Serial numbers taken from genuine watches have been engraved onto counterfeits, which means a number that looks correct on a chart proves nothing by itself. And a serial says nothing about the parts of the watch, so a case can be original while the dial, hands, bezel insert or movement are not.

Dating and authentication are separate questions. The serial answers the first one and has nothing to say about the second. A serial that fits the reference, a reference that fits the dial and bezel, a calibre that fits both, and paperwork that matches all of it, is a watch whose story holds together. Any one of those on its own is not.

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Dating notes by model

Serial and reference get you close. The details below get you the rest of the way, model by model, using the changes that are visible without opening anything.

Submariner

The Submariner divides cleanly. Four-digit references are vintage, with the 5513 running an unusually long time from 1962 to 1989. Five digits starting 168 or 166 covers the acrylic-crystal transition into sapphire, from 1979. The 16610 ran from 1987 to 2010 and is the reference most people picture when they think of a modern Submariner. Aluminium bezel inserts end and Cerachrom begins in 2010 with the 116610LN, which also brought the wider Maxi case. The move from 40mm to 41mm happened in 2020, so a 41mm Submariner cannot predate it.

GMT-Master and GMT-Master II

Crown guards separate the 6542 from the 1675 at the end of the 1950s. The GMT-Master II arrives in 1983 with the 16760, thick enough to earn the Fat Lady nickname, and the independently adjustable hour hand is what makes it a II. The 16710 ran nearly two decades and appeared with Pepsi, Coke and all-black inserts, which is why bezel colour alone does not date one. Ceramic arrives in 2007, and the two-colour ceramic bezel in 2013 with the Batman. The left-handed Sprite arrived in 2022 with the crown at 9 o'clock.

Cosmograph Daytona

Manual-wind Daytonas run to 1988. The 16520 then brings the first automatic movement, based on the Zenith El Primero, which is why that generation is called the Zenith Daytona. The in-house calibre 4130 arrives in 2000 with the 116520. The ceramic bezel arrives in 2016 with the 116500LN, and 2023 brings the calibre 4131 and the 126500LN. The white dial with black subdials is the Panda, and it exists in both of the last two generations, so the reference matters more than the dial.

Datejust

The Datejust has run continuously since 1945 and covers more references than any other Rolex, which makes cross-referencing essential. Pie-pan dials and acrylic crystals mean 1600 series, so 1960 to 1977. Quickset date arrives with the 160 series in 1977. Sapphire and the calibre 3135 arrive with the 162 series in 1988. The modern era runs 116 from 2004 and 126 from 2016, and case sizes fan out to 28, 31, 36 and 41mm, which is what the third and fourth digits are telling you.

Day-Date

The Day-Date only ever comes in precious metal, so a steel Day-Date does not exist and the material digit should always read 5, 6, 8 or 9. Quickset arrives with the 180 series in 1977, double quickset with the 182 series in 1988. The 118 series covers 2000 to 2019, and 128 is the current 36mm. The Day-Date II at 41mm is a short 2008 to 2015 run in the 218 series, replaced by the Day-Date 40 in the 228 series. Presidential refers to the bracelet and gets used for the whole model.

Glossary

The terms that come up most often when dating or describing a Rolex.

Reference number

The manufacturer's model code, engraved between the lugs at 12 o'clock. Identifies the model, bezel, material and configuration.

Serial number

The unique code identifying one individual watch, engraved at 6 o'clock between the lugs or on the rehaut.

Rehaut

The inner flange between the dial and the crystal. Carries the engraved ROLEX text and the serial on modern watches.

Calibre

The movement. Rolex identifies each by number, and each has its own production window.

Cerachrom

Rolex's ceramic bezel insert material, introduced across the sports models from 2005 onward.

Oystersteel

Rolex's name for the 904L stainless steel it uses across its steel cases and bracelets.

Rolesor

Steel combined with gold. Yellow Rolesor is steel and yellow gold, white Rolesor is steel and white gold, Everose Rolesor is steel and Everose gold.

Rolesium

Steel combined with platinum, used on the Yacht-Master.

Everose

Rolex's own pink gold alloy, introduced in 2005.

Chromalight

Rolex's luminescent material, which glows blue. Replaced Super-LumiNova through the late 2000s.

Cyclops

The magnifying lens over the date window, a Rolex signature since the 1950s.

Twinlock and Triplock

Rolex's screw-down crown systems. Triplock adds a third sealing zone and is used on the deeper divers and the Daytona.

Superlative Chronometer

Rolex's own certification, applied after the movement is cased. Since 2015 it covers the watch to within minus two to plus two seconds a day.

COSC

The independent Swiss body that chronometer-certifies movements before they are cased.

Oyster case

Rolex's screw-down water-resistant case, patented in 1926.

Oysterflex

Rolex's elastomer-over-metal-blade strap, used on gold sports models.

Jubilee

The five-link bracelet introduced in 1945 for the Datejust.

President bracelet

The three-link semi-circular bracelet made for the Day-Date.

Flat Jubilee

The integrated bracelet introduced in 2025 for the Land-Dweller.

Dynapulse

The escapement introduced in 2025 in the calibre 7135, replacing the Swiss lever with a rolling energy transfer.

Box and papers

The original packaging and documentation. Adds materially to what a watch is worth.

Complete set

The watch together with its box, papers and accessories.

Unworn

Never worn. Not the same as new from an authorized dealer.

Frequently asked questions

What year is my Rolex?

If the serial is numeric or starts with a single letter, match it against the chart on this page and you will get a production year accurate to within a year or two. If the serial is eight scrambled characters, the watch was made after 2010 and cannot be dated from the number. Use the warranty card date, the reference production window and the generation markers instead.

Where is the serial number on a Rolex?

On watches made before 2005 it is engraved between the lugs at 6 o'clock, under the bracelet, so the bracelet has to come off to read it. From 2005 it is also laser-etched on the rehaut, the inner ring between the dial and the crystal, readable through the glass. From 2008 the rehaut is the only place it appears. Oysterquartz, 1530 and 1630 cases carry it on the underside instead.

How many digits is a Rolex serial number?

Between four and eight characters depending on the era. Vintage serials are four to seven digits. From mid-1987 to 2010 it is one letter followed by six digits. From 2010 it is eight mixed letters and numbers.

Why can my Rolex not be dated by its serial number?

Because it was made after 2010. Rolex switched to randomised serials that carry no date information, so no chart or lookup tool can date one. The change was made to frustrate counterfeiting and to keep production volumes private.

When did Rolex start using random serial numbers?

Around 2010. The changeover was gradual rather than instant, and G-prefix serials and random serials were both being issued during the same period.

What is the difference between a serial number and a reference number?

The serial identifies one individual watch and no two watches share it. The reference identifies the model and configuration, and every watch built to that specification carries the same one. The serial is engraved at 6 o'clock, the reference at 12 o'clock.

Can you check a Rolex serial number online?

You can look up an approximate production year for pre-2010 serials using a chart like the one on this page. You cannot check a serial against Rolex to confirm it belongs to a real watch, because no public database exists.

Does Rolex have a public serial number database?

No. Rolex has never published one and there is no official record a buyer can query. Every serial chart in circulation is compiled by collectors and dealers from watches with dated paperwork.

Why does the 1954 serial number look lower than 1953?

Because the count reset. In the early 1950s Rolex reached 999,999 and started again from a low number rather than moving to seven digits. That is why 1953 begins in the 800,000s and 1954 begins around 23,000. The chart is not wrong.

Can one serial number match two different years?

Yes, for numeric serials below roughly 856,000, because of the sequence reset. A number in that range fits one year before the reset and one after. The lookup on this page returns both candidates, and the watch itself, its reference, dial and movement, settles which one is right.

What does a letter at the start of a Rolex serial mean?

It identifies the production series, which maps to a period between 1987 and 2010. The first four letters were R, L, E and X, spelling ROLEX without the O. The order after that is neither alphabetical nor strictly chronological, and several series ran at the same time.

Which letters did Rolex never use as serial prefixes?

B, I, J, O and Q were never issued as Rolex serial prefixes. Those letters are associated with Tudor cases. Some random post-2010 serials do begin with J, O or Q, which is a different thing entirely.

What does LN mean on a Rolex reference?

Lunette noire, French for black bezel. So 126610LN is the Submariner Date with a black Cerachrom bezel. LV is lunette verte, green bezel, and LB is lunette bleue, blue bezel.

What does BLRO mean?

Bleu et rouge, the blue and red bezel that collectors call the Pepsi. It appears on references including 126710BLRO in steel and 126719BLRO in white gold.

What is the reference number for a Pepsi GMT?

The current steel Pepsi is 126710BLRO, introduced in 2018. The white gold versions are 116719BLRO and 126719BLRO. Vintage Pepsi bezels appear on the 1675 and the 16710.

Which reference is the Hulk and which is the Kermit?

The Kermit is 16610LV, a green bezel with a black dial, made from 2003 to 2010 for the Submariner's 50th anniversary. The Hulk is 116610LV, green bezel and green dial, made from 2010 to 2020. The current green-bezel-black-dial version, 126610LV, is the Starbucks.

What is the rehaut on a Rolex?

The rehaut is the inner metal ring between the dial and the crystal. On modern Rolex watches it carries the word ROLEX repeated around the ring, a crown at 12 o'clock and the serial number at 6 o'clock.

When did Rolex start engraving the rehaut?

The first engraved rehauts appeared in 2004 and became common in 2005. By 2008 every Oyster reference had one, and the case engraving between the lugs had been dropped.

What is the tiny crown etched on the crystal?

A laser-etched crown at 6 o'clock, introduced from around 2001 and 2002 and rolled out model by model. It is very small and easiest to see when light catches it at an angle. Pre-2002 watches do not have it, and the green-crystal Milgauss never carried one.

How do I read a Rolex clasp code?

The code is stamped inside the clasp hinge. The letter is the year and the number is the month, so G4 is April 1982. An extra S means a service replacement bracelet. It dates the bracelet rather than the watch.

What do the country codes on Rolex papers mean?

A three-digit code in the upper left of older guarantee certificates showing the market the watch was first sold into. They are uncommon before 1980, and United States paperwork generally used 710 for the whole country.

Does the warranty card show the production year?

No. It shows the date the watch was sold to its first owner, which can be a year or more after the watch was made. It is still the most direct dating evidence available for a post-2010 Rolex.

What if my Rolex has no papers?

Then the watch has to speak for itself. The reference gives a production window, the serial gives a year or an era, and the case size, bezel material, bracelet, clasp code, dial text and calibre narrow it further. Between them you can usually place a watch within a couple of years.

Is the serial number proof that a Rolex is real?

No. There is no public database to check a serial against, serials from genuine watches have been copied onto counterfeits, and a serial says nothing about whether the dial, hands, bezel or movement are original to the case. Dating and authentication are separate questions.

Does the year affect what a Rolex is worth?

Production year is one factor among several. Reference, configuration, condition and completeness of box and papers all carry weight, and for some references a particular production period is more sought after than others. Year on its own does not set a value.

Who buys Rolex watches in Louisiana?

Watch The Throne Timepieces buys Rolex from Baton Rouge and across Louisiana, including New Orleans, Lafayette, Prairieville and Gonzales, as an independent specialist rather than an authorized dealer. Send the reference and the condition and you will get a real number back.

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