Those appear in the same Simplex catalog (mid 70's?) along with thesimilar "Sunburst" alloy retrofriction levers, and use the sameinternal components. I have replacement "Derlin" lever bodies, ifanyone has some that are brittle or broken.-- Wayne BinghamLovettsville, Virginia USA>>>>>>> These are plastic-bodied retrofrictions, with the logos used on the original alloy bodied Retrofrictions introduced circa 1974. These plastic ones show up on eBay fom time to time. I would guess because they use the original shape and logo they are probably from the 70's, since the 80's alloy Retrofrictions had cutout levers without the logos. But I can't be sure - perhaps the cutout style just didn't work in plsatic.>> Regards,>> Jerry Moos>>>> Found some black Simplex retrofriction shifters on ebay>> this morning--never seen them like this before, though:>>>> 200362428299>>>> \ufffc>>>> The barrels look right but the lever graphics and style>> look to be an homage to the old Delrin-derailleur-days>> levers...>>>> What gives?>>>> Thanks,>>>>>> Jon Spangler