Marshall amps 1969-1992 with a Serial Number:
We do not have serial number information on Marshall Amps before 1969.
The serial number is usually located on the back panel of the
chassis but some
amplifiers made between 1979-1980 had them on
the front panel.
From July 1969 to December 1983, the date letter was put after the
serial number.
From Jan 1984 to October 1992 the model letter first, then
the date letter second,
were before the
serial number.
Letters I & O were
omitted to avoid confusion with numbers 1 & 0.
|
Model Code
|
Model
Type |
|
A/ or /A |
200 Watt |
|
RI |
Reissue |
|
S/ or S/A |
50 Watt |
|
SB/ or SB/A |
100 Watt - Super Bass |
|
SL/ or SL/A |
100 Watt - Super Lead |
|
SP/ |
Super PA |
|
ST/ or ST/A |
100 Watt - Tremolo |
|
T/ or T/A |
50 Watt - Tremolo |
|
|
Date Code
|
Year |
|
A |
1969-70 |
|
C |
1971 |
|
D |
1972 |
|
E |
1973 |
|
F |
1974 |
|
G |
1975 |
|
H |
1976 |
|
J |
1977 |
|
K |
1978 |
|
L |
1979 |
|
M |
1980 |
|
|
|
Date Code
|
Year |
|
N |
1981 |
|
P |
1982 |
|
R |
1983 |
|
S |
1984 |
|
T |
1985 |
|
U |
1986 |
|
V |
1987 |
|
W |
1988 |
|
X |
1989 |
|
Y |
1990 |
|
Z |
1991-92 |
|
Marshall amps with a Barcode 1993-1996:
The first two numbers are the year, and the last two
numbers are the month.
Marshall amps with a Barcode 1997-Present:
In 1997 Marshall changed to the latest dating system which is
the easiest to decipher of them all. It is simply the year
followed by the week.
Example:
1998-35-1234: this tells us that the amp was built in week 35 of
1998
