This is the earliest Terrot advert that I have been able to find. It depicts Terrot’s ‘Double Cadre Diamant’ or ‘Double Diamond Frame’ - which probably works wonders - with its triangulated double down tube and twinned seat tube.

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

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• Publisher: T.C.F. Revue Mensuelle
• Country: France
• Date: August 1892
• Derailleur brands: Terrot
• Derailleurs: none