Bsa Bicycle Serial Number

To all who have asked about the bike, I have been very plain that is is A) a 'Bitsa' BSA, B) is a '68 according to the title, and C) has matching serial numbers that indicate the frame and engine cases are 1969 A65F model (title doesn't indicate model). So, Full Disclosure, and 'caveat emptor' right up front. 1939-1945 WW2 BSA Airborne Folding Paratroopers Bike Now Sold BSA AIRBORNE. Frame number R52631 SUMMARY: This Airborne BSA is in good running order. The rear wheel is not original and pedals are fitted rather than the original bars. By the way, if the BSA airborne bicycle owners could send me their serial numbers (stamped on right side of frame below where the rear axle pokes out e.g. R12345) and whether there are two thin tubes between the seat and pedals - i.e. First model or one fat tube - second model. I did not picture it, but the serial number is R48042 and is stamped on the left rear lug. I have tried to provide plenty of photos that are representative of the bike's true condition. BSA Serial Number System BSA used a system of letters and numbers for yearly identification of their machines. Asmaul husna anak. This information combined with the yearly numbers book should help you identify the year and model of your machine. As with all listings of this type there will be mistakes.

Engine & Frame Numbers by Year
Year	Model	Notes	Engine Number	Frame Number	Notes
1938	500cc	–	JM24 101	JM24 101	–
1939	500cc	–	KM24 101	KM24 101	–
1949	350cc	–	ZB32GS 101	ZB31 101	Rigid frames
1949	500cc	–	ZB34GS 101	ZB32S 101	Spring frames
1950	350cc	–	ZB32GS 2001	ZB31 9001	Rigid frames
1950	500cc	–	ZB34GS 2001	ZB32S 2001	Spring frames
1951	350cc	–	ZB32GS 3001	ZB31 14001	Rigid frames
1951	500cc	–	ZB34GS 3001	ZB32S 3001	Spring frames
1952	350cc	–	ZB32GS 4001	ZB31 19001	–
1952	350cc	Clubmans & racing	ZB32GS 6001	ZB31 19001	Rigid frames
1952	500cc	Sand castings	ZB34GS 4001	ZB32S 4001	Sprint frames
1952	500cc	Die castings	ZB34GS 5001	ZB32S 4001	–
1953	350cc	–	BB32GS 101	BB31 101	Rigid frames
1953	500cc	–	BB34GS 101	BB32S 101	Spring frames
1954	350cc	–	BB32GS1001	CB32 101	–
1954	500cc	–	BB34GS 1001	CB32 101	–
1954	350cc	–	CB32GS 101	CB32 101	–
1954	500cc	–	CB34GS 1001	CB32D 101	–
1954	500cc	Daytona Model	BB34GSD 101	CB32D 101	–
1955	350cc	–	BB32GS 2001	CB32 1501	–
1955	350cc	–	CB32GS 501	CB32 1501	–
1955	500cc	–	BB34GS 2001	CB32 1501	–
1955	500cc	–	CB34GS 501	CB32 1501	–
1955	350cc	–	DB32GS 101	CB32 1501	–
1955	500cc	–	DB34GS 501	CB32 1501	–
1956	350cc	–	DB32GS 501	CB32 4001	–
1956	500cc	–	DB34GS 501	CB32 4001	–
1956	500cc	Revised Cyl. Head	DBD34GS 2001	BB32R 301	–
1956	500cc	USA Short Circuit	DB34GS 501	BB32R 301	–
1957	350cc	–	DB32GS 501	CB32 4001	–
1957	500cc	–	DB34GS 501	CB32 4001	–
1957	500cc	Revised Cyl. Head	DBD34GS 2001	BB32 301	–
1957	500cc	USA Short Circuit	DB34GS 501	BB32 301	–
1958	350cc	–	DB32GS	CB32 7001	–
1958	500cc	–	DBD34GS 3001	CB32 7001	–
1959	350cc	–	DB32GS 1501	CB32 7873	–
1959	500cc	–	DBD34GS 3753	CB32 7873	–
1959	500cc	Catalina Scrambler	DBD34GS 3753	CB32C 101	–
1960	350cc	–	DB32GS 1601	CB32 8701	–
1960	500cc	–	DBD34GS 4601	CB32 8701	–
1960	500cc	Catalina Scrambler	DBD34GS 4601	CB32C 351	–
1961	350cc	–	DB32GS 1741	CB32 10101	–
1961	500cc	–	DBD34GS 5684	CB32 10101	–
1961	500cc	Catalina Scrambler	DBD34GS 5684	CB32C 601	–
1962	350cc	–	DB32GS 1794	CB32 11001	–
1962	500cc	–	DBD34GS 6504	CB32 11001	–
1962	500cc	Catalina Scrambler	DBD34GS 6504	CB32C 741	–
1963	500cc	–	DBD34GS 6881	CB32 11451	–
1963	500cc	Catalina Scrambler	DBD34GS 6881	CB32C 857	–

Bsa Bicycle Serial Number

Engine & Frame Numbers by Year
Year	Model	Notes	Engine Number	Frame Number	Notes
1938	500cc	–	JM24 101	JM24 101	–
1939	500cc	–	KM24 101	KM24 101	–
1949	350cc	–	ZB32GS 101	ZB31 101	Rigid frames
1949	500cc	–	ZB34GS 101	ZB32S 101	Spring frames
1950	350cc	–	ZB32GS 2001	ZB31 9001	Rigid frames
1950	500cc	–	ZB34GS 2001	ZB32S 2001	Spring frames
1951	350cc	–	ZB32GS 3001	ZB31 14001	Rigid frames
1951	500cc	–	ZB34GS 3001	ZB32S 3001	Spring frames
1952	350cc	–	ZB32GS 4001	ZB31 19001	–
1952	350cc	Clubmans & racing	ZB32GS 6001	ZB31 19001	Rigid frames
1952	500cc	Sand castings	ZB34GS 4001	ZB32S 4001	Sprint frames
1952	500cc	Die castings	ZB34GS 5001	ZB32S 4001	–
1953	350cc	–	BB32GS 101	BB31 101	Rigid frames
1953	500cc	–	BB34GS 101	BB32S 101	Spring frames
1954	350cc	–	BB32GS1001	CB32 101	–
1954	500cc	–	BB34GS 1001	CB32 101	–
1954	350cc	–	CB32GS 101	CB32 101	–

Bsa Bicycles Serial Numbers