What kind of handlebar grips would have originally been fitted to a mid 1930s bicycle?
My first ‘big bicycle’, bought for me as an 12 year-old in the early 1950’s, was a 1930’s era Hercules (a _very_ secondhand machine it was, too!) the handlebar grips of which were made of black rubber. I can recall that fact well because the grips were slightly perished and the rubber ‘dust’ would stain my hands. Incidentally, if you can not obtain suitable grips, then you could always wrap the bars in old fashioned, black ‘cotton’ type insulating tape which was often done in the old days. NB I’ve now got a fully equipped Trek Navigator 400… what a comfortable machine it is – and no perished rubber grips to contend with, either!!