Important Watches, Wristwatches and C...

Geneva, Hotel Des Bergues, Apr 18, 1998

LOT 231

L. Leroy & Cie., Horlogers de la Marine, 7 Bd. de La Madeleine, Paris, No. 9417, circa 1920. Very fine 18K gold keyless pocket lever chronometer with chronograph and instantaneous 60 minutes recorder. Bulletin de Premiere Classe de l'Observatoire National de Besancon, No. 12575, in 1920, with a total of 161 marks.

C. Three body, massive, "bassine", polished. Hinged gold cuvette. D. White enamel with Arabic numerals, outer minutes and chronograph rings, sunk subsidiary seconds and minutes register . Gold "pear" hands. M. 18 " ', gilt brass with punch-mark in form of a viper ' s head set by the Observatory of Besancon, 24 jewels, straight line lever escapement, brass-invar Guillaume balance adjusted by Jaccard, blued-steel balance spring with terminal curve. Chronograph with visible work and button on the winding-crown. Signed on the dial, case and movement, numbered on the case and movement. Accompanied by copies of the timing certificates. Diam. 52 mm.