Super Champion Derailleur Shifter | France 1937 This indexed… | Flickr
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Super Champion Osgear Rear Derailleur | France 1937 This cha… | Flickr
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Super Champion 1939 rear derailleur | DCI Steel Vintage Racing Bicycles
Bartali, Coppi & Derailleurs in the 1949 Tour de France - Mariposa Bicycles
