BSA Models 1941 to 1950

1941
Model	Engne prefix	Engine sequence	Frame prefix	Frame sequence	CC
C10	WC10	101	WC10	101	250
C11	WC11	101	WC10	101	250
B30	WB30	101	WB30	101	350
C12	WC12	101	WC10	101	350
W.D. M20	WM20	31879	WM20	31879	500
W.D. M20	WM20	40939	WM20	40939	500
W.D. M20	WM20	45669	WM20	45669	500
W.D. M20	WM20	50549	WM20	50549	500

1942
Model	Engne prefix	Engine sequence	Frame prefix	Frame sequence	CC
W.D. M20	WM20	55429	WM20	55429	500
W.D. M20	WM20	60309	WM20	60309	500
W.D. M20 ESTIMATED	WM20	70000	WM20	70000	500

1943
Model	Engne prefix	Engine sequence	Frame prefix	Frame sequence	CC
W.D. M20 ESTIMATED	WM20	90000	WM20	90000	500

1944
Model	Engne prefix	Engine sequence	Frame prefix	Frame sequence	CC
W.D. M20 ESTIMATED	WM20	110000	WM20	110000	500

1945
Model	Engne prefix	Engine sequence	Frame prefix	Frame sequence	CC
C10	XC10	101	XC10G	101	250
C11	XC11	101	XC10G	101	250
B31	XB31	101	XB31	101	350
M20	XM20	101	XM20	101	500



1946
Model	Engne prefix	Engine sequence	Frame prefix	Frame sequence	CC
C10 GIRDER FORK	XC10	101	XC10G	101	250
C10 TELESCOPIC FORK	XC10	101	XC10T	101	250
C11 GIRDER FORK	XC11	101	XC10G	101	250
C11 TELESCOPIC FORKS	XC11	101	XC10T	101	250
B31	XB31	101	XB31	101	350
B32 COMPETITION	XB32	101	XB31	101	350
M20	XM20	101	XM20	101	500
M21	XM21	101	XM20	101	600

1947
Model	Engne prefix	Engine sequence	Frame prefix	Frame sequence	CC
C10	XC10	101	XC10T	101	250
C11	XC11	101	XC10T	101	250
B31	XB31	101	XB31	101	350
B32 COMPETITION	XB32	101	XB31	101	350
A7	XA7	101	XA7	101	500
B33	XB33	101	XB31	101	500
B34 COMPETITION	XB34	101	XB31	101	500
M20	XM20	101	XM20	101	500
M21	XM21	101	XM20	101	600

1948
Model	Engne prefix	Engine sequence	Frame prefix	Frame sequence	CC
C10	YC10	101	YC10	101	250
C11	YC11	101	YC11	101	250
B31	YB31	101	YB31	101	350
B32 COMPETITION	YB32	101	YB31	101	350
A7	YA7	101	YA7	101	500
B33	YB33	101	YB31	101	500
B34 COMPETITION	YB34	101	YB31	101	500
M20	YM20	101	YM20	101	500
M33	YM33	101	YM20	101	500
M21	YM21	101	YM20	101	600

1949
Model	Engne prefix	Engine sequence	Frame prefix	Frame sequence	CC
D1 BANTAM	YD	101	YD1	101	125
C10	ZC10	101	ZC10	101	250
C10 AUSTRALIA	ZC10A	101	ZC10	101	250
C11	ZC11	101	ZC10	101	250
B31	ZB31	101	ZB31	101	350
B31 PLUNGER	ZB31	101	ZB31S	101	350
B32 COMPETITION	ZB32	101	ZB31	101	350
B32 COMPETITION PLUNGER	ZB32	101	ZB31S	101	350
B32GS GOLD STAR	ZB32GS	101	ZB31	101	350
B32GS GOLD STAR PLUNGER	ZB32GS	101	ZB32S	101	350
A7	ZA7	101	ZA7R	101	500
A7 PLUNGER	ZA7	101	ZA7S	101	500
A7S STAR TWIN PLUNGER	ZA7S	101	ZA7S	101	500
B33	ZB33	101	ZB31	101	500
B33 PLUNGER	ZB33	101	ZB31S	101	500
B34 COMPETITION	ZB34	101	ZB31	101	500
B34 COMPETITION PLUNGER	ZB34	101	ZB31S	101	500
B34GS GOLD STAR	ZB34GS	101	ZB31	101	500
B34GS GOLD STAR PLUNGER	ZB34GS	101	ZB32S	101	500
M20	ZM20	101	ZM20	101	500

M33	ZM33	101	ZM20	101	500
M21	ZM21	101	ZM20	101	600
M21 BATAVIA	ZM21	101	ZM20	2201	600

1950
Model	Engne prefix	Engine sequence	Frame prefix	Frame sequence	CC
D1 BANTAM WITH WICO PACY ELECTRICS	YD	20001	YD1	20001	125
D1 BANTAM WITH LUCAS ELECTRICS	YDL1	101	YD1	20001	125
D1 BANTAM WICO ELECTRICS PLUNGER	YD	20001	YD1S	20001	125
D1 BANTAM LUCAS ELECTRICS PLUNGER	YDL	101	YD1S	20001	125
D1 BANTAM WICO PLUNGER GPO	YD	122001	YD1S	20901	125
C10	ZC10	4001	ZC10	10001	250
C10 AUSTRALIA	ZC10A	101	ZC10A	4001	250
C11	ZC11	8001	ZC10	10001	250
B31	ZB31	8001	ZB31	9001	350
B31 PLUNGER	ZB31	9001	ZB31S	5001	350
B31 ALLOY MOTOR	ZB31A	9001	ZB31	9001	350
B31 ALLOY MOTOR PLUNGER	ZB31A	9001	ZB31S	5001	350
B32 COMPETITION	ZB32	3001	ZB31	9001	350
B32 COMPETITION PLUNGER	ZB32	3001	ZB31S	5001	350
B32 COMPETITION ALLOY MOTOR	ZB32A	3001	ZB31	9001	350
B32 COMPETITION ALLOY MOTOR PLUNGER	ZB32A	3001	ZB31S	5001	350
B32GS GOLD STAR	ZB32GS	2001	ZB31	9001	350
B32GS GOLD STAR PLUNGER	ZB32GS	2001	ZB32S	2001	350
A7	ZA7	7001	ZA7	4001	500
A7 PLUNGER	ZA7	7001	ZA7S	6001	500
A7S STAR TWIN PLUNGER	ZA7S	4001	ZA7S	6001	500
B33	ZB33	4001	ZB31	9001	500
B33 PLUNGER	ZB33	4001	ZB31S	5001	500
B33 ALLOY MOTOR	ZB33A	4001	ZB31	9001	500
B33 ALLOY MOTOR PLUNGER	ZB33A	4001	ZB31S	5001	500
B34 COMPETITION	ZB34	2001	ZB31	9001	500
B34 COMPETITION PLUNGER	ZB34	2001	ZB31S	5001	500
B34 COMPETITION ALLOY MOTOR	ZB34A	2001	ZB31	9001	500
B34 COMPETITION ALLOY MOTOR PLUNGER	ZB34A	2001	ZB31S	5001	500
B34GS GOLD STAR	ZB34GS	2001	ZB31	9001	500
B34GS GOLD STAR PLUNGER	ZB34GS	2001	ZB32S	2001	500
M20	ZM20	4001	ZM20	7001	500
M33	ZM33	3001	ZM20	7001	500
M21	ZM21	5001	ZM20	7001	600
M21 DUTCH AUTOMOBILE ASSOCIATION	ZM21	5001	ZM20D	8426	600
A10 GOLDEN FLASH	ZA10	101	ZA7	4001	650
A10 GOLDEN FLASH PLUNGER	ZA10	101	ZA7S	6001	650

1941

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1942

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1943

Model

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1944

Model

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1945

Model

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1946

Model

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CC

1947

Model

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CC

1948

Model

Engne prefix

Engine sequence

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Frame sequence

CC

1949

Model

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Engine sequence

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1950

Model

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