The Longitude at the Eve of the Third...

Geneva, Hotel Des Bergues, Oct 23, 1999

LOT 172

Girard-Perregaux, Chaux-de-Fonds, No. 80545,made in 1875.Very fine and rare 18K pink gold hunting cased, keyless pocket chronometer, awarded a Bulletin de Première Classe at the Observatory of Neuchâtel.

C. Four body, massive, "bassine et filets carrure ronde", engine-turned, the cover with a blank escutcheon. Hinged gold cuvette with engine-turned border. D. White enamel with Roman numerals, outer Arabic minute ring and sunk subsidiary seconds. Blued steel "tulip" hands. M. Glazed 20''', nickelplated, 15 jewels, mainly in gold screwed settings, goldwheel train, pivoted detent escapement, cut bimetallic balance, free sprung blued steel spherical balance spring.Signed on the dial, cuvette and movement.Diam. 59 mm.