Rolex Reference Numbers Explained: How to Read Any Rolex Model Number
Every Rolex carries a reference number, also called a model number, that identifies exactly what the watch is: the model line, the bezel style and the metal. Knowing how to read a Rolex reference number lets you confirm that a watch matches its listing, compare generations of the same model, and search for the exact configuration you want. This guide explains where to find the reference number, what each digit means, and how to decode letter suffixes such as LN, BLRO and BLNR.
What is a Rolex reference number?
A Rolex reference number is a four- to six-digit code, sometimes followed by letters, that Rolex assigns to each model configuration. Every watch with the same model, size, bezel type and material shares the same reference number. A stainless steel Datejust 41 with a smooth bezel is reference 126300, for example, wherever and whenever it was sold.
A reference number is not unique to one watch. That is the job of the serial number.
Rolex reference number vs. serial number
| Reference number | Serial number | |
|---|---|---|
| What it identifies | The model, bezel type and material | One individual watch |
| Shared or unique | Shared by every watch of that configuration | Unique to a single watch |
| Where it is engraved | Between the lugs at 12 o'clock | Between the lugs at 6 o'clock on older watches; on the inner bezel ring (rehaut) on modern watches |
| What it is used for | Identifying the model, comparing prices, ordering the right parts | Estimating the age of older watches and matching a watch to its papers |
Where to find the reference number on a Rolex
- On the case. The reference number is engraved on the side of the case between the lugs at 12 o'clock. The bracelet has to be removed to see it, which is best left to a watchmaker so the lugs are not scratched.
- On the warranty card or certificate. Rolex paperwork lists both the model (reference) number and the serial number. The numbers on the papers should match the numbers on the watch.
- On the box label and hang tag. These often show the reference number as well, although boxes and tags are easily swapped between watches.
From the mid-2000s Rolex began engraving the serial number on the rehaut, the inner ring between the dial and the crystal, at 6 o'clock. The reference number stayed between the lugs at 12 o'clock.
Four, five and six digits: Rolex reference numbers by era
- Four digits were used on vintage models into the 1970s, such as the Submariner 5513, the GMT-Master 1675 and the Datejust 1601.
- Five digits arrived from the late 1970s, such as the Submariner Date 16610, the Explorer II 16570 and the Datejust 16233.
- Six digits have been used since around 2000. Many models simply gained a leading 1, and later generations changed the second digit.
The steel Submariner Date shows the pattern clearly: reference 16610 became 116610LN, which became today's 126610LN. For a closer look at the last two, see our comparison of the Rolex 116610 and 126610.
How to read a Rolex reference number, digit by digit
A modern six-digit reference breaks into three parts, plus optional letters:
- The first four digits identify the model family and its generation.
- The fifth digit usually indicates the bezel type.
- The last digit indicates the material.
- Letters at the end, when present, describe the bezel colour or gem setting.
Model family: the first digits
| Reference begins | Model | Example |
|---|---|---|
| 1262 | Datejust 36 | 126234 |
| 1263 | Datejust 41 | 126334 |
| 1265 | Cosmograph Daytona | 126500LN |
| 1266 | Submariner Date | 126610LN |
| 1267 | GMT-Master II | 126710BLRO |
| 1282 | Day-Date 36 | 128238 |
| 2282 | Day-Date 40 | 228238 |
Material: the last digit
| Last digit | Material |
|---|---|
| 0 | Oystersteel (stainless steel) |
| 1 | Everose Rolesor (steel and 18k Everose gold) |
| 2 | Rolesium (steel and platinum) |
| 3 | Yellow Rolesor (steel and 18k yellow gold) |
| 4 | White Rolesor (steel and 18k white gold) |
| 5 | 18k Everose gold |
| 6 | Platinum |
| 8 | 18k yellow gold |
| 9 | 18k white gold |
These are the codes used on current models. Older references used some digits differently; a 7, for example, appeared on 14k gold watches.
Bezel type: the second-to-last digit
| Digit | Bezel type |
|---|---|
| 0 | Smooth (domed) |
| 1 | Rotating |
| 2 | Engraved or engine-turned |
| 3 | Fluted |
| 4 | Gem-set |
The bezel digit is the least consistent part of the system. Rolex has reused digits over the decades, and several sports models do not follow the pattern: the current no-date Submariner is 124060 and the Explorer 36 is 124270. Treat the bezel digit as a guide and confirm it against the watch itself.
Letter suffixes: bezel colours and gems
Most suffixes are abbreviations of French words.
| Suffix | Stands for | Meaning | Example |
|---|---|---|---|
| LN | Lunette noire | Black bezel | 126610LN Submariner Date |
| LV | Lunette verte | Green bezel | 126610LV Submariner Date |
| LB | Lunette bleue | Blue bezel | 126613LB Submariner Date |
| BLNR | Bleu / noir | Blue and black bezel | 126710BLNR GMT-Master II |
| BLRO | Bleu / rouge | Blue and red bezel | 126710BLRO GMT-Master II |
| CHNR | Chocolat / noir | Brown and black bezel | 126711CHNR GMT-Master II |
| GV | Glace verte | Green-tinted crystal | 116400GV Milgauss |
| RBOW | Rainbow | Rainbow gem-set bezel | 116595RBOW Daytona |
Rolex reference number examples, decoded
- 126610LN: 1266 is the current Submariner Date, 1 is a rotating bezel, 0 is Oystersteel and LN is a black bezel.
- 126334: 1263 is the Datejust 41, 3 is a fluted bezel and 4 is White Rolesor, meaning a steel watch with a white gold bezel.
- 126711CHNR: 1267 is the GMT-Master II, the first 1 is a rotating bezel, the final 1 is Everose Rolesor and CHNR is the brown and black bezel collectors call the Root Beer.
- 228238: 2282 is the Day-Date 40, 3 is a fluted bezel and 8 is 18k yellow gold.
- 16570: a five-digit reference for the Explorer II produced from 1989 to 2011, ending in 0 for stainless steel.
Why the reference number matters when buying a pre-owned Rolex
- It confirms the watch matches the listing. The reference on the case should match the reference on the papers. A mismatch can point to the wrong paperwork or swapped parts.
- It pinpoints the generation. References 116610LN and 126610LN are both steel Submariner Dates, but they differ in case size (40 mm and 41 mm) and movement (calibre 3135 and calibre 3235).
- It drives value. Two watches that look alike at a glance can sell for very different prices depending on the reference.
- It ensures correct service and parts. Watchmakers order bezels, crystals, bracelets and movement parts by reference.
A correct reference number does not prove a watch is genuine, because counterfeiters copy real reference numbers. Authentication also means examining the movement, case, dial and bracelet. Every watch sold by Crescent Watch Guys is inspected and guaranteed authentic.
Frequently asked questions
Is a Rolex reference number the same as a model number?
Yes. Reference number, model number and style number all describe the same code. Rolex paperwork typically labels it the model number.
Does the reference number tell me what year a Rolex was made?
No. It tells you the range of years in which that reference was produced. To estimate the year of an individual watch, use the serial number on older watches or the date on the warranty card. Rolex switched to random serial numbers around 2010, so the serial number of a newer watch does not reveal its age.
Can I see the reference number without removing the bracelet?
Not on the watch itself. The number on the rehaut of a modern Rolex is the serial number. Without removing the bracelet, the reference number can be read from the warranty card.
Do all Rolex watches with the same reference look identical?
No. One reference can be offered with different dial colours, hour markers and bracelets. The Datejust 41 reference 126334, for example, is available with several dials and on either an Oyster or a Jubilee bracelet.
Can a Rolex be looked up by its reference number?
Yes. Searching the reference number is the fastest way to find a specific model, its specifications and comparable watches for sale. Rolex does not offer a public database for serial numbers.
Find your Rolex by reference
Browse our pre-owned Rolex watches, each listed with its reference number, or explore popular lines such as the Submariner, Datejust and GMT-Master II. If you already own a Rolex and want to know what it is worth, see our sell and trade page or contact our Houston team with the reference number and we will help you identify it.