10, Grande-Rue, Pré-St-Gervais (Seine)
Listed as competing in several races in 1927 and 1928, won the 250cc class of the French Tourist Trophy race on May 10th, 1928.
Three models were offered in 1927, a 2-speed belt drive, a 3-speed belt drive, and a 3 speed chain drive.
9 mars 1928, Levallois, pesage des motos du Paris-Nice Cornélis sur Rochester 250 cmc
Perrin, Cornelis sur motocyclette Rochester, 1928 Six Days
Sources: motocyclettesaustral.es.tl; BNF Gallica.