Chronometer made by Joseph Thaddeus Winnerl on a movement by Robert Robin
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“Repetition à ponts” con scappamento a cilindro in rubino, venduto al generale Nicholas Joseph Maison, il 30 settembre 1807 per 1.696 FF .
Movement with lever detent escapement invented by Robert Robin
Skelectric watch with Masonic decoration.
First generation French lever escapement movement
Hour and quarter touch repeater with Debaufre escapement modified by Pierre Le Roy, enamelled case.
Movement with “à pattes d'ecrevisses” (crab leg) escapement
Quarter and half quarter hour repeater with ruby cylinder escapement no. 255.
Josiah Emery Straight Lever Escapement Chronometer.
Chronometer with quarter hour repeater and calendar, pivoted detent escapement with experimental thermal compensation
Ruby lever escapement.
Dead-beat seconds watch with double-wheel duplex escapement.
Verge escapement, enamelled case decorated with diamonds and pearls
"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.
Movement with experimental lateral lever escapement in the Robin style.
Quarter hour repeater and calendar with Debaufre escapement modified by Pierre Le Roy