Are you saying you don't expect a 1969 British motorcycle to have a serial number or a VIN? I would assume it should and would be very wary if it didn't. How can they (the police, border guards, insurance companies etc) match any numbers on the ownership/registration to the bike if the bike didn't have a serial number or VIN? Surely a google search of "where is the serial number on a BSA motorcycle (or whatever it is)?" would answer your question. Based on your question, I wouldn't be in any rush to hand over money until you are sure this thing can clear customs.
Almost sounds like you're thinking of buying a bike with no ownership/registration/papers with the intent of crossing the border with it.
-- Edited by Pete Moss on Tuesday 27th of June 2017 01:32:56 PM
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Actually, in real racing ... it IS how fast you went.
Sorry, I guess I don't understand what it is you're after as I've never known of anyone having to prove date of manufacture of any vehicle as the ownership/registration papers have always been good enough. Within the last three years I know of two people who have brought a '56 Chev and a '29 Model A across without issue. The paperwork matched the car (VIN/serial numbers) and that was good enough.
I have no idea why a motorcycle would be any different.
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Actually, in real racing ... it IS how fast you went.