Hope this is of use to people, I just spent a while rooting around on the internet to find this, knew it was somewhere!


BSA date letters

Prefix Gun Calibre Date

A CADET 0.177 1945/46
AA BUCCANEER 0.177 1979-
B CADET 0.177 1946/49
BA CADET 0.177 1949/51
BC CADET 0.177 1951/59
C CADET MAJOR 0.177 1947/49
CA CADET MAJOR 0.177 1949/55
CC CADET MAJOR 0.177 1955/57
DA BUCCANEER 0.22 1979-
E CLUB MK1 0.177 1948/50
EA CLUB MK1 0.177 1950/54
EB CLUB MK1 0.177 1955/57
EC CLUB MK1 0.177 1958
ED CLUB MK2 0.177 1959
EE AIRSPORTER+FEW CLUB MK2 0.177 1959/65
EF AIRSPORTER MK2 0.177 1965/67
EG AIRSPORTER MK2 0.177 1967/68
EK AIRSPORTER MK4 0.177 1969/71
EL AIRSPORTER MK5 0.177 1971/74
EN AIRSPORTER MK5 AND 6 0.177 1974-
EP AIRSPORTER 'S' 0.177 1979-
G AIRSPORTER MK1 0.22 1948/54
GA AIRSPORTER MK1 0.22 1955/56
GB AIRSPORTER MK1 0.22 1956/58
GC AIRSPORTER MK1 0.22 1958/59
GD AIRSPORTER MK2 0.22 1959/65
GE AIRSPORTER MK2 0.22 1965/67
GF AIRSPORTER MK2 0.22 1967/68
GG AIRSPORTER MK2 0.22 1968/69
GI AIRSPORTER MK4 0.22 1969/71
GJ AIRSPORTER MK5 0.22 1971/74
GL AIRSPORTER MK 5 AND 6 0.22 1974-
GM AIRSPORTER 'S' 0.22 1979-
K MERLIN 0.177 1962/64
KA MERLIN 0.177 1964/68
L MERLIN 0.22 1962/64
LA MERLIN 0.22 1964/68
M CADET MAJOR 1947/48
N METEOR MK1 0.177 1959/62
NA METEOR MK2 0.177 1962/66
NB METEOR MK2 0.177 1966/68
ND METEOR MK3 0.177 1967/69
NE METEOR MK3 AND SUPER METEOR MK3 0.177 1969/73
NG METEOR MK4 AND SUPER METEOR MK4 0.177 1973-79
NH METEOR MK5 AND SUPER METEOR MK5 0.177 1979-
PA SCORPION 0.177 1977-
PB SCORPION 0.22 1977-
T METEOR MK1 0.22 1959/62
TA METEOR MK2 0.22 1962/66
TB METEOR MK2 0.22 1966/68
TD METEOR + SUPER MK3 0.22 1967/69
TE METEOR + SUPER MK3 0.22 1969/73
TG METEOR + SUPER MK4 0.22 1974/78
TH METEOR + SUPER 0.22 1979-

W MERCURY MK1 0.177 1971/73
Z MERCURY MK1 0.22 1971/73
WB MERCURY MK2 0.177 1974/78
ZB MERCURY MK2 0.22 1974/78
WC MERCURY MK3 0.177 1978-
ZC MERCURY MK3 0.22 1978-
WH MERCURY S 0.177 1980-
ZH MERCURY S 0.22 1980-


W CADET 0.177 1949/50
Y CADET MAJOR 0.177 1949-



Additional:

AR - Supersport .177
AS - Spitfire .177

C - Standard Club.177

DN - Super Ten .177
DP - Super Ten .177 ?

ER - Airsporter S Mk II .177 1983-85
ES - Airsporter S MkIII 1985-86
ET - Stutzen & Carbine .177 1985-86

GN - Airsporter Mk VII .22 1983-86
GP - Airsporter S Mk II .22 1985-85
GS - Goldstar .22 1991-2000
GT - Goldstar .177 1991-2000

RA - Scorpion pistol .22 1972 -
RB - Scorpion pistol.22 1972-94

RH - Superstar .22 1990-2001

T - BSA Standard .22 1936-39

ZR - Airsporter RB2 .22 1992-2000
ZT - Airsporter RB2 Stutzen .22 1992-2000
1A - Firebird .177 2001-current
2A - Firebird .22 2001 - current