L\'ART DE L\'HORLOGERIE EN FRANCE DE ...
Geneva, Hotel Des Bergues, Nov 14, 1993
Breguet No. 246, sold to M. Durbach on 20 Nivôse an V I (1798) for 648 Francs. Rare very early silver "montre de souscription" with an experimental calibre.
C. Three body, "forme collier", with gold rims, by Amy Gros, the blue champleve enamelled monogram "C.D.", on a circular gold plate inlaid on the polished back. D. White enamel with Breguet numerals. Single blued-steel " souscription" hand with tapered point. M. 25"', gilt brass, the earliest type of "souscription" experimental calibre, with central barrel, retained along with the wheels by a single plate. Overhanging ruby cylinder escapement, plain brass three armed balance, blued-steel flat balance spring with bimetallic compensation curb on the regulator. In very good condition. Diam. 62mm.