On Ebay at this time is a 1975 Witcomb USA (auction #221223494281). A very interesting bike. It seems this shop was sort of a ground zero for east coast frame building at that time, as it employed Richard Sachs, Chris Chance (later of Fat City Cycles) and Peter (JP) Weigle. My question is; is there any way to tell who of these three might have built this bike? Perhaps all had a hand in it's constuction. Any insights would be appreciated. Cheers!