A Rolex serial number is the unique number of one individual watch. On modern Rolex watches it is engraved on the rehaut, the inner ring between the dial and the crystal, at 6 o'clock. On older watches it is engraved on the case between the lugs at 6 o'clock, hidden by the bracelet. Serial numbers issued before 2010 can tell you roughly when a watch was made; since 2010 they are random and cannot.
The serial number is the link between a watch and its papers, which is why it matters when you buy. This guide explains where to find it, what it does and does not tell you, and how to use it.
Serial number and reference number: the difference
Every Rolex has two numbers, and they are often confused.
- The reference number identifies the model. Every steel Submariner Date of the current generation is a 126610LN.
- The serial number identifies one watch. No two are the same.
The reference tells you what the watch is. The serial tells you which one it is. Our guide to reading Rolex reference numbers covers the first; this one covers the second.
Where is the serial number on a Rolex?
Modern watches: on the rehaut
The rehaut is the steel ring that slopes down from the crystal to the dial. From the mid-2000s Rolex began engraving it with the word ROLEX repeated around the ring, and with the serial number at 6 o'clock. You can read it through the crystal with good light, without removing anything.
Older watches: between the lugs
On earlier watches the serial number is engraved on the side of the case between the lugs at 6 o'clock, and the reference number is in the same place at 12 o'clock. Both are covered by the bracelet, which has to be removed to see them.
For a few years in the 2000s, Rolex engraved the serial in both places. Since about 2008, it has been on the rehaut only.
On the papers
The serial number is printed on the warranty card, or on the paper certificate that older watches came with, together with the reference and the date of sale.
What a Rolex serial number can tell you
Before 2010: an approximate date
Until 2010, Rolex issued serial numbers in sequence. For most of the twentieth century they were plain numbers that grew year by year. In 1987, having reached the end of the seven-digit range, Rolex began putting a letter in front, starting with R and continuing through a series of letters over the following two decades.
Because the sequence is broadly known, a serial number from this period indicates when the case was made, usually to within a year or so. Collectors publish tables of these ranges. They are compiled from observation, since Rolex has never published its own, so treat any date taken from one as an estimate.
Note too that the serial dates the case, not the sale. A watch could sit in a retailer's safe for a year or more before it was sold, so the date on the papers is often later than the serial suggests.
Since 2010: nothing about the date
In 2010 Rolex moved to random serial numbers: eight characters, mixing letters and digits, with no order to them. A random serial tells you nothing about when the watch was made.
For these watches the date comes from the warranty card. Without the card, the generation of the watch can still be worked out from its reference and details, but not its year. That is one reason papers matter more on modern watches; our guide to box and papers explains the others.
What a serial number cannot tell you
- It does not prove a watch is genuine. Counterfeiters copy real serial numbers, sometimes the same one onto many watches. A correct-looking number is one check among many.
- It is not a public record. Rolex does not offer the public a service to look up a serial number.
- It does not record the service history. That comes from service papers.
How to use the serial number when you buy
1. Match the watch to its papers
This is the main use. The serial number on the rehaut or between the lugs must be the same as the one on the warranty card. If they differ, the papers belong to another watch.
2. Check that the date makes sense
For a pre-2010 watch, the approximate date from the serial should agree with the reference and with the features of the watch. A serial from the early 1990s on a case with features introduced fifteen years later is a warning.
3. Look at the engraving itself
Genuine engraving is fine, sharp and even. On watches engraved between the lugs, the characters are cut cleanly into the steel and catch the light with a bright, precise edge. Shallow, sandy or uneven characters are a bad sign. Our guide to spotting a fake Rolex covers the other checks.
4. Ask whether it has been checked against theft records
Reputable sellers check serial numbers against databases of lost and stolen watches. It is a reasonable question to ask.
Why sellers hide part of the serial number
You will often see listings where the serial is partly covered in photographs. That is normal and sensible: a full serial number published online can be copied onto counterfeit watches or used in false claims. A seller should still be willing to confirm the full number to a serious buyer, and it will be on the papers you receive.
Other numbers on a Rolex
- Bracelet and clasp codes. The clasp carries a small code and the end links carry numbers that identify the bracelet type. They help confirm that a bracelet is correct for the watch.
- Inside the case back. Older watches have reference and date stamps inside the case back, visible only when a watchmaker opens it.
- The movement number. The movement has its own number, also visible only when the watch is opened.
A watchmaker checks these during an inspection. Our authenticity page explains what our specialist checks before a watch ships.
Serial numbers and value
Some collectors care about the serial range of a watch because it places it in a particular period of production: an early example of a reference, or one from the last year. For most buyers, what matters is simpler. The serial should match the papers, the date should fit the watch, and the engraving should be right.
If you are selling, have the serial and reference ready along with your papers; our guide to what your watch is worth explains how they affect an offer. You can browse every Rolex we have in stock.
Frequently asked questions
Where is the serial number on a Rolex?
On modern Rolex watches, on the rehaut, the inner ring around the dial, at 6 o'clock. On older watches, engraved on the case between the lugs at 6 o'clock, under the bracelet.
Can I tell the year of my Rolex from the serial number?
Approximately, if it was made before 2010, using collectors' tables of serial ranges. Since 2010 serial numbers are random and do not indicate a date.
What is the difference between the serial number and the reference number?
The reference identifies the model and is shared by every watch of that type. The serial number is unique to one watch.
Can I look up a Rolex serial number online?
Rolex does not provide a public lookup. Unofficial tables give approximate production years for watches made before 2010.
Does a serial number prove a Rolex is real?
No. Serial numbers can be copied. It is one of many points a specialist checks.
Are your Rolex watches authentic?
Yes. Every watch is checked by our specialist before it ships. We are an independent retailer and are not affiliated with Rolex.
