If you're here, you probably want to know one thing: what year is my Rolex? Here's the trouble. Most of the serial number lists floating around online are wrong. They've been copied and re-copied so many times that nobody remembers where the original data came from, and because everyone quotes them, a lot of perfectly good watches end up wrongly dated. So I put together the database below using accurate, trusted sources, and I keep it current.
Where to find your Rolex serial number
Look between the lower lugs, underneath where the bracelet meets the case. That's where it lives. If your watch was made before the end of 1972, there's a second clue: a date stamped inside the case back showing the quarter and the year. Something like III 65, meaning the third quarter of 1965.
That case back date should land close to the serial number date. It should never be newer than the serial. It can absolutely be a year or two older, though, and that's completely normal. Rolex made case backs in batches and simply worked through whatever was on the shelf.
Rolex serial number year
This tells you when the watch was made, not when it was sold. Those are two very different dates, and people conflate them all the time. Your guarantee papers or bracelet code might be later than the case date. They should never be earlier.
Need help with your Rolex serial number?
If something isn't adding up, drop me a line. I'll help if I can. Otherwise, if you're trying to figure out the age of your Rolex, start here.
| Rolex Serial Number | Year |
| 20,000 – 40,000 | 1927 -1937 |
| 40,000 – 200,000 | 1938 -1942 |
| 200,000 – 300,000 | 1941 -1944 |
| 300,000 – 500,000 | 1945 -1946 |
| 500,000 – 620,000 | 1947 -1948 |
| 620,000 – 700,000 | 1948 -1950 |
| 700,000 – 725,000 | 1951 |
| 725,000 – 880,000 | 1952 |
| 880,000 – 999,000 | 1953 |
| 0 – 49,000 | 1954 |
In 1954 when Rolex reached serial numbers of 1 million they started again as follows:
| Rolex Serial Number | Year |
| 0 – 50,000 | 1954 |
| 50,000 – 150,000 | 1955 |
| 150,000 – 250,000 | 1956 |
| 250,000 – 350,000 | 1957 |
| 350,000 – 450,000 | 1958 |
| 450,000 – 550,000 | 1959 |
| 550,000 – 650,000 | 1960 |
| 650,000 – 755,000 | 1961 |
| 755,000 – 865,000 | 1962 |
| 865,000 – 1,000,000 | 1963 |
| 1,000,000 – 1,105,000 | 1964 |
| 1,105,000 – 1,275,000 | 1965 |
| 1,275,000 – 1,485,000 | 1966 |
| 1,485,000 – 1,710,000 | 1967 |
| 1,710,000 – 1,945,000 | 1968 |
| 1,945,000 – 2,240,000 | 1969 |
| 2,240,000 – 2,590,000 | 1970 |
| 2,590,000 – 2,890,000 | 1971 |
| 2,890,000 – 3,200,000 | 1972 |
| 3,200,000 – 3,570,000 | 1973 |
| 3,570,000 – 3,865,000 | 1974 |
| 3,865,000 – 4,115,000 | 1975 |
|
4,115,000 – 4,260,000 5,000,000 – 5,085,000 |
1976 |
| 5,085,000 – 5,430,000 | 1977 |
| 5,430,000 – 5,865,000 | 1978 |
| 5,865,000 – 6,205,000 | 1979 |
| 6,205,000 – 6,560,000 | 1980 |
| 6,560,000 – 7,130,000 | 1981 |
| 7,130,000 – 7,600,000 | 1982 |
| 7,600,000 – 8,375,000 | 1983 |
| 8,375,000 – 8,785,000 | 1984 |
| 8,785,000 – 9,155,000 | 1985 |
| 9,155,000 – 9,860,000 | 1986 |
| 9,860,000 – 9,900,000 | 1987 |
Rolex Service Cases and the Move to Letter Prefixes
The 1976 Service Case Anomaly
In 1976, Rolex held back a run of cases to use as future Service Cases, meaning replacement cases fitted during a service rather than at original assembly. These have been issued over the years, and so far they turn up in the range from the late 4.38 million serials up to around 4.8 million.
Worth knowing if your watch lands in that window. The serial won't necessarily tell you when the watch was born.
1987: Rolex Switches to Letters
Rolex hit serial number 10,000,000 in 1987 and did something sensible about it. Rather than carry on into eight digits, they started over with a letter prefix followed by six digits. The first one was R.
Two things trip people up here. First, the letters don't run alphabetically. R was followed by L, then E, then X, and so on. There's a logic to it if you know where to look, but it isn't the alphabet. Second, a new letter doesn't start on the 1st of January. Rolex simply ran through all one million serials in a given letter and then moved to the next one, whenever that happened to fall. So a letter can span the back half of one year and the front half of the next.
Six digits per letter means one million watches per letter. The order runs as follows.
| Letter Prefix | Year Started |
| R | 1987 |
| L | 1988 |
| E | 1990 |
| X | 1991 |
| N | 1992 |
| C | 1993 |
| S | 1994 |
| W | 1995 |
| T | 1996 |
| U | 1997 |
| A | 1998 |
| P | 2000 |
| K | 2001 |
| Y | 2002 |
| F | 2003 |
| D | 2005 |
| Z | 2006 |
| M | 2007 |
| V | 2008 |
| G | 2010 |
The Random Rolex Serials
In 2010 Rolex changed the system again, and this time they made it deliberately unhelpful. Modern serials are eight characters, a mix of letters and numbers, generated at random. There's no sequence to follow, no letter that maps to a year, nothing to look up. A watch from 2012 and a watch from 2023 look exactly the same on paper.
Which means that from 2010 forward, only Rolex knows when a given watch was made. If you need that date confirmed, you're going through an Authorised Dealer or Rolex Service Centre, and even then they may or may not tell you.
Frustrating? A bit. But it's very much the point. Random serials make it far harder to fake a watch's provenance, and given how much counterfeiting goes on at this end of the market, it's tough to argue with the logic.