The one I posted about was a 1950 250cc BSA, a good looking bike, lacquered dark red tank mudguards & frame, not a square inch of glassfibre or plastic to be seen, large chrome oval panels each side of the four gallon tank, with the BSA motif in the middle, no heel & toe gear change, they came in later, you pressed down to change up, to go to a lower gear, you revved slightly, & put your toe under & pushed up, it was a work of art to get it right at first, but you soon got used to it, one was in a classic BSA bike auction recently it fetched £1300, in the 1920's my father owned a Rudge, square tank, 120cc, almost no suspension, long loose chain that was always coming off, & leather seat, a saddle really, like a large pedal cycle's.