Quarter hour repeater and calendar with Debaufre escapement modified by Pierre Le Roy
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Central seconds, regulateur dial, cylinder escapement
Double-dial astronomical watch with cylinder escapement, centre seconds, and equation of time.
“Montre de souscription”.
"Repetition demi quart sur timbres” with lever escapement on the “garde temps” principle, hunter case with secret “portrait” compartment, “jumping hours” device sold to Count Panin on 11 June 1821, for FF 4,800, reentered, restored and resold with number 4931 to Monsieur Lacroix of Turin on 16 May 1831 for 4800 francs.
Small sized watch, cylinder escapement, enamelled case
Thirty-tooth “rack lever” escapement
Scappamento ad ancora detent di Robin
Duplex double wheel escapement, monthly republican calendar.
Cylinder escapement watch formerly belonging to Louis Bonaparte (1778–1846), brother of Napoleon, King of Holland, and passed down within the Imperial dynasty.
Weekly winding device, monthly calendar, with comma escapement
Lever escapement, quarter and hour repeater, republican calendar.
Lever escapement, quarter hour repeater
Made on the Houriet principle with a special dial
Side lever experimental escapement
"Souscription" with auxiliary minutes and seconds