This advert, placed by EDCO, appears to be for the, then new-fangled, Presta valve - an innovation that I would not want to do without. Moreover EDCO seems to advocate fitting Presta valves on your car.

I have included it because it’s one of the earliest adverts by EDCO that I have seen.

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

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• Publisher: T.C.F. Revue Mensuelle
• Country: France
• Date: February 1926
• Derailleur brands: EDCO
• Derailleurs: none