Vacheron & Constantin in Geneva, Charles Vacheron & Co, Successors, No. 129998, circa 1870. Very fine and rare, 18K gold hunting cased, keyless pocket chronometer.

C. Four body, massive, "bassine et filets", polished with reeded band, the cover engraved with an escutcheon. D. White enamel with Roman numerals, outer minutes ring and sunk subsidiary seconds. Blued-steel "flours de lys" hands. M. 20"', nickel plated, "fausses cotes" decoration, gold train of wheels, 16 jewels, pivoted detent escapement, cut bimetallic balance, blued-steel helical balance spring with terminal curves and regulator. Diam. 54 mm.

Vacheron & Constantin a Geneve, No. 183645, circa 1897. Fine 18K gold and enamel, keyless minute repeating watch.

C. Four body, massive, "bassine", polished, the back centred with a black and red champleve monogram frame within an engine-tuned decoration in a sunburst pattern. Hinged gold cuvette. D. White enamel with Roman numerals, outer minutes ring and sunk subsidiary seconds. Blued-steel "spade" hands. M. 19 "' , nickel plated, "stripped" decoration, 29 jewels, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring with swan-neck micrometric index. Repeating on gongs with slide in the band. Signed on the dial and movement. Diam. 54 mm.

Lepine, Place des Victoires a Paris, No. 25975, circa 1880. Fine and rare 18K gold, hunting cased, astronomical, keyless minute repeating watch with a fly back perpetual calendar and moon phases.

C. Four body, massive, "bassine et filets, canine plate", polished. Hinged gold cuvette. D. White enamel with Roman numerals, outer Arabic minutes ring, sunk subsidiary seconds and apertures for the moon phase volvelle, months and clays of the week, sector for the fly-back calendar. Gold "fleur de lys" hands. M. 19"', gilt brass, 29 jewels, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring. Repeating on gongs with slide in the band. Signed on the dial, cuvette and movement. Diam. 53 mm.

H.R. Ekegren, Geneva, No. 77813, made for J.E. Caldwell & Co., Philadelphia, circa 1900. Fine 18K pink gold, keyless quarter repeating watch.

C. Four body, massive, "bassine", polished. Hinged gold cuvette with engine-tau ned border. D. White enamel with Arabic numerals, outer gilt minutes ring and sunk subsidiary seconds. Gold Breguet hands. M. 18"', nickel plated, 29 jewels partly in gold screwed settings, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance sprng with swan-neck micrometric index. Repeating on gongs with slide in the band. Signed on the dial cuvette and movement. Diam. 51 mm.

Henry Capt, Geneva, circa 1910. Fine 18K gold, hunting cased, keyless minute repeating watch, with chronograph tachometer and instantaneous 30 minutes recorder.

C. Four body, massive, "demi-bassine", polished. Hinged gold cuvette. D. Matted silver with Roman numerals, outer Arabic minutes and chronograph ring, red tachometer scales for kilometres, calibrated by fractions of 200 metres, sunk subsidiary seconds and minutes register . M. 18"', nickel plated, "fausses cotes " decoration, 29 jewels, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring. Chronograph with visible work, push piece in the band. Repeating on gongs with slide in the band. Signed on the dial. Diam. 49 mm.

Lucien Sandoz & Fils, Lode, case No. 76143, circa 1890. Fine 18K gold hunting cased keyless pocket chronometer with pivoted detent escapement and one minute tourbillon regulator.

C. Four body, massive, "bassine", polished. hinged gold cuvette. D. White enamel with Roman numerals, outer Arabic minutes ring and sunk subsidiary seconds. Blued-steel "spade" hands. M. 20"', LeCoultre calibre, nickel plated, "a vagues" decoration, pivoted detent escapement, cut bimetallic balance, blued-steel Breguet balance spring. One minute tourbillon regulator with polished-steel elaborated three-arm Grether first type of carriage. Signed on the dial and movement. Diam. 57 mm.

Ecole d'Horlogerie de Geneve, Master Piece, cased after the second World War. Fine 18K gold keyless pocket lever chronometer with one minute tourbillon regulator.

C. Four body, massive, "bassine et filets carrure ronde" , polished. Detachable gold glazed cuvette. D. White enamel with Roman numerals, outer minutes ring and sunk subsidiary seconds. Blued-steel "spade " hands. M. 19"', LeCoultre calibre, nickel plated, "fausses cotes " decoration, straight line lever escapement, cut bimetallic balance, blued-steel Breguet balance spring. One minute tourbillon regulator with polished-steel equidistant three-arm Pellaton type carriage. Signed on movement. Diam. 58 mm.

Audemars Piguet & Co., Brassus & Geneve, No. 30835, made in 1924. Very elegant and slim platinum astronomical keyless, minute repeating dress-watch with perpetual calendar and moon phases.

C. Three piece, massive, "variee " , polished and satine. D. Satine silver with applied gold Arabic numerals, outer minutes ring, subsidiary dials for clays of the week, months for the leap-year cycle, dates and seconds with inner moon phase aperture. White gold "cathedrales " hands. M. 17 "' , rhodium plated with gold wheel train, 31 jewels, straight line lever escapement, cut bimetallic balance, 8 adjustments, blued-steel Breguet balance spring. Repeating on gongs with slide in the band. Signed on the dial, case and movement. Diam. 47 mm.

Audemars Piguet & Co., Brassus & Geneve, No. 30667, made for "A 1'Emeraude", Lausanne, in 1924. Very elegant and slim platinum astronomical keyless, minute repeating dress-watch with perpetual calendar and moon phase.

C. Three piece, massive, "variee", polished with white gold bezels and bow, yellow gold band, pendant and back. D. Satine silver with Arabic numerals, outer minutes ring, subsidiary dials for days of the week, months for the leap-year cycle, dates and seconds with inner moon phase aperture. Blued-steel Breguet hands. M. 17"' 1/2 S.V.F., rhodium plated with gold wheel train, 19 jewels, straingt line lever escapement, cut bimetallic balance, blued-steel Breguet balance spring. Signed on the movement by the retailer. Diam. 46 mm.

Albert G. Piguet, Le Sentier, No. 220, made in 1933. Fine and extremely rare clemontration watch with double balance and differential gearing, inspired by Breguet ' s researches on resonance mutual adjustments.

C. Three body, massive, "bassine " , polished with glazed back. D. White enamel with Roman numerals, outer minutes ring and sunk subsidiary seconds. Blued-steel "spade " hands. M. 15"', rhodium plated, "fausses cotes" decoration, 29 jewels, double straight line lever escapement, two brass-invar Guillaume balances, blued-steel Breguet balance springs with swan-neck micrometric adjustments. Signed on the movement. Diam. 49 mm.