Look inside the amp (but don’t stick you hand in there, even after being unplugged the amp may retain a dangerous electrical charge), there should be a tube chart on most amps. On this chart there is a hand stamped date code consisting of 2 letters. For example AD would be April 1990 and DG would be July 1954.
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Fender Amp Date Codes |
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|
Letter Code |
Vintage Year |
Reissue Year |
Month |
|
A |
– |
1990 |
January |
|
B |
– |
1991 |
February |
|
C |
1953 |
1992 |
March |
|
D |
1954 |
1993 |
April |
|
E |
1955 |
1994 |
May |
|
F |
1956 |
1995 |
June |
|
G |
1957 |
1996 |
July |
|
H |
1958 |
1997 |
August |
|
I |
1959 |
1998 |
September |
|
J |
1960 |
1999 |
October |
|
K |
1961 |
– |
November |
|
L |
1962 |
– |
December |
|
M |
1963 |
– |
– |
|
N |
1964 |
– |
– |
|
O |
1965 |
– |
– |
|
P |
1966 |
– |
– |
|
Q |
1967 |
– |
– |