Th e problem with all of these types of questions is BSA made more than one varaiton of just about every model.
Some people just can not accept that while they saw the bikes new in the showrooms with one finish, in a different county they bikes could and regularly were different .
Some years there was a
Home market model sold in UK & Ireland
A USA model Canada to Mexico
An east coast model Canada & USA East Coast
A West coast model ( mostly California )
A General Export ( Europe )
An Australian & NZ model
Basically they would all be the same except for one or more items like the seat, handle bars, colour, petrol tank, mudguards & finish of minor items like brake pedals could be different.
Because Roy Bacon
rehashed the UK BSA literature posted to his office into a book all of a sudden it became criminal to have any bike that differed from the UK specification.
Down here in OZ I can clearly remember walking into the BSA dealers in Wentworth Ave and seeing multiple varaitons of the same model because by the late 60's early 70's we would get Australian deliverd bikes & USA delivered bikes that missed the selling season.
Ane we would get both the general export version & the home version if there were leftovers from that years production run.