This bike has remained in the family since it was ridden by Glen Robbins in the 1932 LA Olympics. But it's been repainted many times and the headbadge is long gone. There doesn't appear to be any serial number or any other form of identification. One book says he rode a BSA competitively but I don't know if this bike is a BSA. The crank, rims and tires are not original as you may have guessed. There are some amazing stories about the team. There was not enough room in the car for all the members of the team so they had to take turns drafting behind the car on the way to LA.