Date Your Speakers

Since 1956, all Celestion chassis drivers have been stamped with a date code (2 numbers and 2 letters), denoting the exact date of manufacture. The codes are added on the production line and are placed on the speakers housing leg or the magnet edge. The following lists provide an accurate record of the date codes used.

1963-1967:

YearMonth
H = 1963A = January
J = 1964B = February
K = 1965C = March
L = 1966D = April
M = 1967E = May
F = June
G = July
H = August
J = September
K = October
L = November
M = December

1968-1991:

YearMonth
A = 1968A = January
B = 1969B = February
C = 1970C = March
D = 1971D = April
E = 1972E = May
F = 1973F = June
G = 1974G = July
H = 1975H = August
J = 1976J = September
K = 1977K =October
L = 1978L = November
M = 1979M = December
N = 1980
P = 1981
Q = 1982
R = 1983
S = 1984
T = 1985
U = 1986
V= 1987
W = 1988
X = 1989
Y = 1990
Z/A = 1991
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