Cylinder escapement, quarter hour repeater.
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Chronometer with Earnshaw spring detent escapement, spherical balance spring.
Compteur a pointage, nouveau modele chronographe a encre, sold at the College de France for 350 FF
“Repetition à ponts” con scappamento a cilindro in rubino, venduto al generale Nicholas Joseph Maison, il 30 settembre 1807 per 1.696 FF .
Quarter andhour repeater, jumping hours device with experimental ruby verge escapement.
« Simple garde-temps, arbre percé 20 lignes échappement ancre” sold to Monsieur de Bignon 11 March 1858.
“Montre de souscription” with verge escapement.
Josiah Emery Straight Lever Escapement Chronometer.
Movement with particular Pouzait lever escapement, quarter hour repeater
Escapement “pallet pin weel”
“Montre de souscription”.
Scappamento ad ancora detent di Robin
“Resilient lever” lever escapement modified by Mortimer George Cole.
Month-day calendar with Poizait lever escapement large central seconds mounted in mahogany case
Movement with experimental lateral lever escapement in the Robin style.
Scappamento ad ancora e compensazione termica