I have never seen any stamping in this area before. You have a '12' there, '1' appears to be less serif - maybe it's there, just not that clear, '2' appears to have the same font as your bogus stamping higher up on the headstock. My guess is the villains used this area as testing ground and later camouflaged the trial stampings.Following your advice, I've cleared off more paint and found more numbers. Not what I was expecting though.
No doubt he stamps them deeper depend ing if it is a Monday morning or a Friday afternoon.This is quite interesting! I have a BSA A7 Special Racing Twin with stamps that are not super deep. Also have a A50 from the competition department that was given to a sidecar racer in '68 and those stamps were driven home pretty hard. I never thought about the life of the stamper. My job seems less repetitive now.
Yes potentially, but where is the documentation to back it up. Without that a future prospective owner has to assume the worst when considering the value. Whilst you have it and enjoy riding it then this does not matter so depends on what your long term plans are.I wonder if my P11 frame was an unnumbered replacement frame and someone just stamped it to make it work with their loose Commando motor.
It was difficult to assess size of these "new" stampings. I don't think they were provided by AMC - possibly by the foundry casting the "malleable lugs", as AMC called them. I know the engine lugs for G12/G15 frames were cast by an outside company and given part numbers by them, I guess that's true for all the lugs used on these frames.I wonder if my P11 frame was an unnumbered replacement frame and someone just stamped it to make it work with their loose Commando motor.