BSA Parts Catalogue for 1972 B50T Victor 500 Trail, B50SS Gold Star 500 Street Scrambler, B50MX Victor 500 Moto-Cross
Re-printed coil bound copy of the factory publication, A4 page size.
Covering Frame and Engine Numbers (at start of production year)
1972: From Engine and Frame Numbers:
In 1969 a new numbering system was introduced using a two letter prefix for the month and model season year.
The first letter designates months as follows:
A: January B: February C: March D: April E: May G: June H: July
J: August K: September N: October P: November X: December
The second letter is the year code:
G: Aug 1971 to July 1972 for bikes made for 1972 selling season.
Numbering started at 00101 and carried across all models.