The BSA with frame number (and also duplicated frame number on the engine) WM20.35572 was made under contract C/7287. This was a contract for 17.000 bikes (frame numbers WM20.25001 - WM20.42000). Unfortunately the ledger page containing this number is lost. But from the previous and the next pages we can see that it must have left the factory in early April 1941. The original census number would have been C4352164.

Here’s a sister bike:



The bikes with ZM numbers are post war.

email (option): wd.register@gmail.com

Sorry for the multiple replies, but for some reason the forum doesn't let me post all this information in one single reply...

email (option): wd.register@gmail.com

Awesome thanks for the info I’ll print it all and keep with the bike cheers

email (option): Gary.probin@gmail.com