Note that the Osgear Champion du Monde that is illiustrated is a rebranded version of the first style of Super Champion Champion du Monde in this collection.

• Publisher: Motor Cycle and Cycle Trader
• Country: UK
• Date: May 1939
• Derailleur brands: Osgear, Constrictor, Super Champion
• Derailleurs: Osgear Super Champion, Osgear Grand Sport, Osgear Champion du Monde