Rolex clasp codes

A         1976
B         1977
C         1978
D         1979
E         1980
F         1981
G        1982
H        1983
I          1984
J          1985
K         1986
L         1987
M        1988
O        1990
P         1991
Q        1992
R         1993
S         1994
T – W 1995
V         1996
Z         1997
Z – W  1998
X         1999
AB      2000
DE      2001
DT      2002
AD      2003
CL       2004
MA     2005
OP      2006
EO      2007
PJ       2008
LT       2009
RS       2010
CP       2011

Random (3-digit)       2011 – Till present day

The number behind the letter(s) seems to be the month when the clasp was produced.

So CL2 would be February 2004

If there is an “S” in front of the code then your clasp was changed during a service.

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