Important Watches, Wristwatches and C...

Geneva, Hotel Des Bergues, Oct 18, 1997

LOT 299

Unsigned, (Courvoisier & Jonais, Chaux-de-Fonds), No. 20340, circa 1875. Fine 18K gold hunting cased, double face calendar keyless watch, Patented on 27 June 1871.

C. Five body, massive, "bassine et filets", engineturned, cover and back engine-turned inside in an Islamic pattern. D. White enamel on the front with Roman numerals, outer Arabic minute ring and sunk subsidiary seconds. Blued steel "spade" hands. White enamel on the rear face, the dates on the border with subsidiary dials for the months and the days of the week. M. 18 - nickel plated, 17 jewels, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring. Nickel plated calendar work driven by the movement. Courvoisier coat-of-arms punched on the movement. Diam. 54 mm.