Rolex Serial Number Table

Below is just a rough estimation assumed to be correct as Rolex never officially release this information. 

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 – 950,000 1953
950,000 – 999,000 1954

When Rolex reached serial numbers of 1 million they started again like follows:

Rolex Serial Number Year
10,000 – 70,000 1954
60,000 – 130,000 1955
130,000 – 220,000 1956
220,000 – 350,000 1957
350,000 – 420,000 1958
420,000 – 500,000 1959
500,000 – 640,000 1960
640,000 – 750,000 1961
750,000 – 880,000 1962
880,000 – 1,010,000 1963
1,010,000 – 1,200,000 1964
1,200,000 – 1,300,000 1965
1,300,000 – 1,500,000 1966
1,500,000 – 1,850,000 1967
1,850,000 – 2,300,000 1968
2,000,000 – 2,400,000 1969
2,400,000 – 2,950,000 1970
2,700,000 – 3,000,000 1971
2,800,000 – 3,800,000 1972
3,750,000 – 4,000,000 1973
4,000,000 – 4,250,000 1974
4,250,000 – 5,000,000 1975
4,250,000 – 5,000,000 1976
5,000,000 – 5,400,000 1977
5,400,000 – 5,850,000 1978
5,850,000 – 6,400,000 1979
6,400,000 – 6,900,000 1980
6,900,000 – 7,350,000 1981
7,350,000 – 7,850,000 1982
7,850,000 – 8,000,000 1983
8,000,000 – 8,600,000 1984
8,600,000 – 9,200,000 1985
9,200,000 – 9,500,000 1986
9,500,000 – 9,999,000 1987

When serial number reached 10,000,000, Rolex switched to Letter Prefix followed by 6 digits so giving 1 million serials per letter based serials starting with ‘R’. The letter prefix was in below order:

Letter Prefix Year Started
R 1987
L 1988
E 1990
X 1991
N 1991
C 1992
S 1993
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

From 2010 onwards Rolex serial numbers changed to 8 digits consisting of randomly generated numbers and letters. This mean from this onward, no one can tell the year of production except Rolex will be able to tell.