Lever escapement and thermal compensation
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Ruby lever escapement.
Straight lever escapement, quarter hour repeater
"Souscription" with auxiliary minutes and seconds
Republican and Gregorian calendar, lever escapement by J.M. Pouizait, skeletonized movement.
Montre simple medaillon eccentrique 13 lignes ½, cylinder escapement in ruby sold to Lionel Rothschild (banker) on 31 May 1831 for 1,400 FF.
Double wheel verge escapement.
Twin barrel chronometer, monthly calendar with ruby lateral lever escapement
“Double face”, hour and quarter repeater, monthly calendar, centre seconds, early cylinder escapement.
Movement with “à pattes d'ecrevisses” (crab leg) escapement
Dead independent seconds movement, cylinder escapement.
“Montre de souscription”, with reverse caliber sold to Monsieur Manu on 1 May 1810 for 600 Francs
Robin style movement with cylinder escapement.
Quarter hour repeater, grand sonnerie clock watch, Robin detent lever escapement
George Graham lever escapement, double-dial astronomical watch, equation of time. Double face watch.
“Montre de souscription”.