Hi my name is Graham, I have just recently bought an OSSA 250 plonker 1972 I have the log book and the frame and engine numbers match on the v5 but im struggling to find the frame number on the bike. Does anyone know where abouts on the frame it is or if its on a plate that may have been knocked off? I know the frame has been re-sprayed at some point.

Thank you in advance.

Graham

If it is 1972 it is a MK1 MAR and as far as I know they didn't have the frame number stamped onto the headstock of the MK1 like later bikes (1974 onwards approx) I think if anything, the MK1 had a dealer's sticker on the headstock which carried the frame number.

Thanks very much for your help.