Free BSA Motorcycle Dating Service.

Over the years we have collected a HUGE archive. With this archive it's possible to find out when your BSA left the factory, often even the exact day. For the WM20 motorcycles we can usually provide an exact day of delivery for motorcycles with  framenumbers up to WM20 69699.

For WM20 BSA's build after that frame number it's an estimated year of manufacture. We can provide a dating certificate for most BSA's from 1924 up to the very end of BSA. The certificate will be digitally provided as a Pdf file send by email.

This dating service is a free service but a small donation to keep the forum and website going is much appreciated.

Henk Joore  ahum(at)

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