3,910 CHF
Hessen Invenit et Fecit in 1787. Extremely rare experimental watch with special escapement and temperature compensation, Inventée en 1787 par Hessen, Horloger de Monsieur P-F à Paris. Later silver, glazed on both faces. White enamel with Roman numerals and subsidiary seconds (hair cracks). Blued steel Breguet hands. Inverted gilt brass full plate with polished steel back plate, fusee with chain, verge escapement, the verge driven by the balance by means of a roller with highly complicated safety device in order to enable the balance to be free when effecting its supplementary arc. Brass four-arm balance with poising screws, short helical balance spring with large bimetallic compensation curb screwed on the front plate. Signed on the dial and dial plate. In working order. Diam. 48 mm. Notes Very interesting attempt to transform a verge escapement into a detached escapement at a time the "draw" was not yet invented.
Auctioneer:
Antiquorum
Date:
1994-10-15
