This photo features Georges Habert, winner of the 1921 Championnat de la Bicyclette Polymultipliée.

He was riding a Desvages bicycle fitted with a Le Chemineau derailleur.

In other news, the bearded bloke standing next to Georges, wearing the flat cap and official armband, appears in a number of photos of the period - he's clearly important, but I do not know his name.... And Pellops Embrocation were early exponents of 'photo bombing'.

(Source gallica.bnf.fr/ Bibliothèque nationale de France)

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• Publisher: Random images of riders
• Date: May 1921
• Derailleur brands: Chemineau
• Derailleurs: Le Chemineau