Celestion 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 speaker’s housing leg or the magnet edge. The following lists provide an accurate record of the date codes used.

1956-1962

1956 A January A
1957 B February B
1958 C March C
1959 D April D
1960 E May E
1961 F June F
1962 G July G
August H
September I
October J
November K
December L

The datecodes from 1956 to 1962 are written in the form: Day, Month, Year. For example: 15DE = 15th April 1960

1963-1967

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

Note the loss of the ‘I’ from the month codes. The date codes from 1963 to 1967 are written in the form: Day, Month, Year. For example: 19MK = 19th December 1965

1968-1991

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

The date codes from 1968 to 1991 are written in the form: Month, Year, Day. For example: KH7 = 7th October 1975

1992-2005

1992 B January A
1992 V February B
1993 D March C
1995 E April D
1996 F May E
1997 G June F
1998 H July G
1999 J August H
2000 K September J
2001 L October K
2002 M November L
2003 N December M
2004 P
2005 Q

The date codes from 1992 are written in the form: Day, Month, Year. For example: 29EJ = 29th May 1999

Credit: Celestion.

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