My 1957 Carlton came to me with these 2nd generation cranks from TA. There was a first generation, very similar but with deeper flutes on the arms. According to VeloBase the 1st generation was introduced in 1962. I'm trying to determine when these 2nd generation cranks were issued.
Do any of you have access to TA catalogs or other catalogs showing TA cranks from 1963 or 1964 that would help establish the date?






Brent