Heres a question..
Do all type 49 frames from say, 1960 through the 70's have identical head and seat tube angles? Was there a time at which they introduced new angles for the type 49 lugs or has it always been 75* 73-30* and 72* from the beginning?
It seems the 75* would be for track frames the 73-30* for road race frames and the 72* for ????
Jim