Sylvère Maes deserves to be remembered for two reasons:

• First he has the most spectacular tan lines ever seen in cycling.
• Second he gave his name to the standard style of drop handlebars. A style that he first used.

This advert describes a range of Osgear derailleurs including 5 models:

2 fork-type derailleurs

• Osgear Super Champion
• Osgear Super Champion Professional

3 derailleurs with pulley wheels

• Osgear Grand Sport
• Osgear Champion du Monde
• Osgear Empire

All these models were all manufactured by Super Champion. They correspond fairly straight-forwardly with Super Champion models of the same name with 3 caveats:

• I think that the Osgear Grand Sport is a rebranded Super Champion Grand Sport Léger.
• The Osgear Champion du Monde appears to be rebranded earlier version of the Super Champion Champion du Monde.
• I think that the Osgear Empire was a rebranded later version of the Super Champion Champion du Monde.

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• Publisher: Cycling
• Country: UK
• Date: 1939
• Derailleur brands: Osgear
• Derailleurs: Osgear Super Champion, Osgear Professional, Osgear Grand Sport, Osgear Champion du Monde, Osgear Empire