Hey gang, digging through bike stuff and looking for eBay fodder (stuff I don't need), and found these shifters. I believe they're first generation C-Record "Synchro", but not certain... I'm looking to unload all but my earliest C-Record, and want to know what these are called. Also, what's the little extra lever on the rear shifter for; overshifting to a chain hanger..or..? Thanks for your help!



P.S.- If somebody has to have these and wants to swap something amazingly cool...