Hello Folks,
I picked up a basket case BSA single. New to all this.
Frame number is CB34-5XX Engine number is BB-34-A-6XX HHC (Dashes are really dots, but I don't know how to make a dot)
Looking at the serial number page, I think I have a 1956 Competition Alloy frame (350cc) and a 1957 Competition Alloy engine (500cc). The previous owner says it was a 1957 Competition Alloy motorcycle and not pieced together.
What is correct? Any help will be greatly appreciated.