I find it rather amusing that people expect a 60 year old bike to be wearing all of the parts that it left the factory with.
This of cours excludes bikes that were placed into storage the day they were bought so never did a mile on a road where they could have fallen over , been run into or just crashed requiring new parts to be fitted.
Most BSA tanks could be obtained without any plastic badges and this was the case for competition bikes where the badges would have to be either lockwired or removd before it was allowed on the track.
Then there were contracts where the police wanted plain tanks with no chrome & decals
Not all bikes that left the BSA factory were as depicted in the glossy brochures, a point that the AHMA pig headedly refuse to acknowledge.
There were lots of bits & pieces that were dealer specific , particularly on West Coast bikes where the different parts are only to be found in dealer notices.