Cylinder escapement, quarter hour repeater.
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Republican calendar with straight lever escapement
“Montre simple” in the style of Breguet.
Hour and quarter repeater with verge escapement
Automatic winding with beating mass, perpetual monthly and weekly retrograde calendar, cylinder escapement.
Verge escapement, enamelled case decorated with diamonds and pearls
Side lever experimental escapement
Reverse hour-quarter repeater (pull)
Quarter hour repeater with double wheel duplex escapement.
Skelectric watch with Masonic decoration.
“Montre de souscription”.
Chronometer made by Joseph Thaddeus Winnerl on a movement by Robert Robin
"Rèpètition de première Classe sur les Principes des Chronomètres", calendar, ruby lever escapement, hour, quarter and half-quarter repeater, sold to M. le Professeur Shumacher, on 23 February 1829 for 3,200 FF.
Quarter hour repeater movement with duplex escapement.
Lever escapement and thermal compensation
“Compteur militaire” cylinder escapement 84 divisions