eBay and Craigslist finds

Bent Cranks - Auction - Italy

http://cgi.ebay.co.uk/CAMPAGNOLO-VERY-RARE-GRAN-SPORT-SHELL-HUBS-OLD-LOGO-NEW_W0QQitemZ360134374386QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item360134374386&_trksid=p3286.c0.m14&_trkparms=66%3A4%7C65%3A10%7C39%3A1%7C240%3A1318

seller writes
Who sold me this item told that these parts have been built in Naples by an innovator who tried to invent new shape parts to improve human force on bicycle. Unfortunately this kind of cranks are not so useful to improve the performances so they did not made again.This is only the second one that I saw in my life

this is partly true