Robin style movement with cylinder escapement.
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Sully's escapement
Double-dial astronomical watch with cylinder escapement, centre seconds, and equation of time.
“Montre de souscription” case n.918 sold au freres Chaudoir 20 Nivose an 13 (10 Janvier 1805)
“Montre simple” in the style of Breguet.
First generation French lever escapement movement
Straight lever escapement, registered on 30 September 1791, there is no information regarding the sale.
Straight lever escapement (attributable to Marguerite Dupont who was a watchmaker in Alençon in 1795)
Tide indicator, enamelled dial, cylinder escapement.
Dead independent seconds movement, cylinder escapement.
Dual scale thermometer on the Houriet principle
« Simple garde-temps, arbre percé 20 lignes échappement ancre” sold to Monsieur de Bignon 11 March 1858.
"Souscription" with auxiliary minutes and seconds
“Montre de souscription”.
Quarter hour repeater clock watch, verge escapement.
Quarter hour repeater, grand sonnerie clock watch, Robin detent lever escapement