Omega, Speedmaster Professional, No 31/50, Ref. 3691, made in 1992.Very fine and very rare, self-winding, water-resistant to 3 atm., 18K yellow gold skeletonized gentleman's wristwatch with round button chronograph, registers and tachometer, with leather strap and 18K yellow gold deployant clasp.

C. skeletonized, three body, massive, polished and brushed, screwed transparent case back, tachometer graduation on the black bezel, lapidated lugs.D. transparent with applied gold indexes, outer ring for the minutes, auxiliary black ring dials for the seconds, the 12 hours and 30 minutes registers. "Bâton" gold and black hands. M. Cal. 867, skeleton, mechanical with manual winding.Signed on the case.Diam. 42 mm.

Auguste Berthoud, No. 171, circa 1860, Modifié et réglé par Vissière, circa 1880.Fine small, rosewood, 42 hour going marine chronometer with power reserve indicator

C. Three body rosewood box with brass corners fixings and sunk brass handles, the glazed upper section with hinged lid and brass corners. Brass bowl and gimballed suspension. D. Silvered with Roman numerals, subsidiary seconds and Up-and-Down scale. Blued steel Breguet hands. M. Spotted brass full plate with cylindrical pillars secured by screws, the back plate relieved for the barrel, fusee with chain and maintaining power, Earnshaw type spring detent escapement, two-arm balance with cylindricaweights and timing screws. Free sprung blued steel helical balance spring with terminal curves.Dial diam. 75 mm.Dim. 16,5 x 16,5 x 16,5 cm.

Breguet No. 886, sold to the Dépôt de la Marine in 1863, for 2000 Francs.Fine mahogany marine chronometer with 49 hour power reserve indicator.

C. Three body mahogany box with external handles, the glazed upper section with hinged lid and brass corners. Brass bowl and gimballed suspension.D. Silvered with Roman numerals, outer minutes ring, subsidiary seconds and Up-and-Down sector. Blued-steel "pear" hands. M. Frosted and gilt, full plate with cylindrical pillars secured by screws, Pons calibre, inverted fusee with maintaining power, Earnshaw type spring detent escapement, two-arm bimetallic compensation balance with cylindrical weights and timing screws, diamond end-stone, free sprung polished-steel helical balance spring with terminal curves.Signed on the dial and mahogany box.Dial diam. 81 mm.Dim. 16 x 16 x 17 cm.

Arnold & Dent, 84 Strand, London, No. 1394,circa 1840.Fine 48 hour going mahogany marine chronometer with power reserve indicator.

C. Three body mahogany box with external handles, the glazed upper section with hinged lid. Brass bowl and gimballed suspension. D. Silvered with Roman numerals, outer minute ring subsidiary seconds and Up-and-Down sector. Blued steel "Pear" hands.M. Brass spotted finished, full plate with cylindrical pillars secured by screws, fusee with maintaining power, Earnshaw type spring detent escapement, two-arm bimetallic compensation balance with cylindrical weights and timing screws, diamond end-stone, free sprung helical balance spring.Signed on the dial and mahogany box.Dial diam. 95 mmDim. 15.2 x 15. 2 x 16.5 cm

Margetts, London, two day timekeeper, James Hatton, London, No. 245, circa 1812.Fine and very rare, small two day going marine chronometer.

C. Three body mahogany box with external brass handles, glazed upper section with hinged lid. Brass bowl and gimballed suspension. D. Silvered with Roman numerals and subsidiary seconds. Gold "pear" hands. M. 21''', gilt brass full plate with cylindrical pillars, fusee with chain and maintaining power, the back plate relieved for the barrel maintained by a bridge, Earnshaw type spring detent escapement, two-arm compensation balance with poising weights and timing screws, ruby end-stone, free sprng blued steel helical balance spring.Margetts signature on the back plate.Signed and numbered by Hatton on the dial.Dial diam. 57 mm.Box dim. 135 x 125 x 130 mm.

Haas & Privat, La Chaux-de-Fonds, Swiss, No. 42681, circa 1890.Fine small mahogany lever chronometer.

C. Three body, mahogany, a magnifying glass on the observation aperture, brass bowl and circular gimballed suspension. D. Silvered with Roman numerals and sunk subsidiary seconds. Blued steel Breguet hands. M. Glazed, 24''', frosted and gilt, three-quarter plate with going barrel, 15 jewels, straight line lever escapement, cut bimetallic balance, free sprung blued steel helical balance spring.Signed on the back plate.Dial diam. 60 mm.Dim. 12,5 x 12,5 x 12,5 mm.

Berthoud Frères, No. 172, made circa 1822, sold to Monsieur Delaval à Marseille, rue de Paradis No. 53, for 1800 Francs.Rare marine deck watch, made in Louis Berthoud's workshop, after his death, under the direction of Henri Motel.

C. Triple body mahogany deck watch type box. Brass case en forme de tabatière secured inside the mahogany box. D. Silvered regulator type, with small Roman chapter for hours, subsidiary seconds below, outer Arabic minute ring on the border of the bezel. Blued steel Breguet hands. M. Frosted and gilt, full plate, fully jeweled, with conical pillars secured by nuts with washers, mainspring by Vincent, dated. Fusee with chain, maintaining power, pivoted detent escapement, three-arm compensation balnce, with three wedged weights and timing screws, free sprung blued steel helical balance spring.Signed on the dial and back plate.Dial diam. 80 mm.

Winnerl, France, No. 356, circa 1849.Fine small mahogany, 49 hour going, marine chronometer.

C. Three body mahogany deck watch type box, the brass bowl with screwed bezel. D. Silvered with Roman numerals, subsidiary seconds and Up-and-Down scale. Blued steel Breguet hands. M. Brass full plate with cylindrical pillars secured by screws, the back plate relieved for the barrel, mainspring by Bourquin dated 1849, fusee with maintaining power, Earnshaw type spring detent escapement, two armed bimetallic compensation balance with cylindrical weights and timing screws. Free sprung blued steelelical balance spring with terminal curves.Dial diam. 75 mm.Dim. 8 x 14 x 16 cm.

Leroy No. 272, sold to the French Navy in 1867.Fine 49 hour going mahogany marine chronometer with power reserve indicator.

C. Three body mahogany box with external handles, the glazed upper section with hinged lid. Brass bowl and gimballed suspension. D. Silvered with Roman numerals, outer Arabic minute ring subsidiary seconds and Up-and-Down sector, marked: Dépot de la Marine. Gilt brass "pear" hands. M. Frosted and gilt, full plate with cylindrical pillars secured by screws, Dumas ebauche No. 741, inverted fusee with maintaining power, later mainspring made by Ducommun, dated 1892, Earnshaw type spring detent escaement, two-arm bimetallic compensation balance with cylindrical weights and timing screws, diamond end-stone, free sprung polished steel helical balance spring.Signed on the dial and mahogany box.Dial diam. 92 mm.Dim. 16,5 x 16,5 x 17,5 cm.

Rolex, Oyster Perpetual, Superlative Chronometer Officially Certified, Cosmograph, Daytona,Ref. 16520, second series of the present production, circa 1995.Fine self-winding, water-resistant down to 100 meters, stainless steel gentleman's wristwatch, with round button chronograph, register and tachometer,50 hours power reserve, stainless steel Oyster bracelet and Rolex deployant clasp.

C. three body, polished and brushed, screwed case back, buttons and Triplock crown, tachometer graduation on the bezel to 400 units per hour, sapphire crystal. D. bicolour black and white with tritium-coated steel indexes, auxiliary dials for the seconds, the 12 hours and 30 minutes registers. "Bâton" tritium-coated steel hands. M. Cal. 4030,13''', rhodium plated, 31 jewels, lever escapement, Superbalance balance adjusted to 6 positions, shock-absorber, self-compensating Breguet balance-spring, micrometer regulator.Dial, case and movement signed.Diam. 40 mm.

Rolex, Oyster Perpetual Date, Yacht-Master, Superlative Chronometer Officially Certified,Ref. 16628, 1990's.Very fine, centre second, self-winding, 18K yellow gold gentleman's wristwatch with date, and 18K yellow gold Oyster bracelet.

C. three body, massive, polished and brushed, screwed case back and crown with protected double safety lock, revolving embossed graduated bezel for calculation of diving-times, sapphire crystal. D. white enamel with round, bâton and triangular applied black and gold indexes, "Cyclope" aperture for the date. "Skeleton" tritium-coated gold hands. M. Cal. 3135, mechanical with automatic winding.Dial, case and movement signed.Diam. 40 mm.

Rolex, Oyster Perpetual, Superlative Chronometer Officially Certified, Cosmograph, Daytona,Ref. 16528, second series of the present production, circa 1995.Fine self-winding, water-resistant down to 100 meters, 18K yellow gold and diamonds gentleman's wristwatch, with round button chronograph, register and tachometer, 50 hours power reserve, 18K yellow gold Oyster bracelet and Rolex deployant clasp. Accompanied by fitted box and certificate.

C. three body, massive, polished and brushed, screwed case back, buttons and Triplock crown, tachometer graduation on the bezel to 400 units per hour, sapphire crystal. D. bicolour gold and black with diamond-set indexes, auxiliary dials for the seconds, the 12 hours and 30 minutes registers. "Bâton" tritium-coated gold hands. M. Cal. 4030, 13''', rhodium plated, 31 jewels, lever escapement, Superbalance balance adjusted to 6 positions, shock-absorber, self-compensating Breguet balance-spring, mcrometer regulator.Dial, case and movement signed.Diam. 40 mm.

Rolex, Day Date, Ref. 18348, 1990's.Fine and rare, centre second, self-winding, water-resistant, 18K yellow gold and diamonds gentleman's wristwatch with day and date, 18K yellow gold President bracelet, each central link paved with diamonds, and 18K pink gold Rolex deployant clasp.

C. three body, massive, polished and brushed, screwed case back and crown, bezel set with diamonds, sapphire crystal. D. embossed matte silver with the logo "Rolex" with diamond-set indexes, "Cyclope" aperture for the date, and for the month on the 12. "Bâton" black and gold hands. M. mechanical with automatic winding.Dial, case and movement signed.Diam. 36 mm.

Frank Muller, Endurance 24, No. 409, completed in 1997.Very fine and rare, water-resistant, stainless steel gentleman's wristwatch with round button chronograph, register, 48 hours power reserve.

C. two body, polished and brushed, screwed dedicated case back. D. orange with white tritium Arabic numerals in 24 hours, auxiliary seconds and30 minutes register dials. "Lozenge" tritium hands.M. with manual winding.Dial, case and movement signed.Diam. 37 mm.

Franck Muller, Cintrée Curvex, Ref. 2850 S6, 1990's.Fine, self-winding, tonneau shaped, water-resistant, 18K pink gold gentleman's wristwatch with 44-hour autonomy, leather strap and 18K pink gold buckle. Accompanied by fitted box and certificate.

C. two body, massive, shaped, polished, sapphire crystal. D. matte silver with painted radial Arabic numerals, auxiliary seconds dial. "Spade" blued steel hands. M. Cal. 2000, mechanical with automatic winding, 21 jewels, platinum rotor.Dial, case and movement signed.Dim. 30 x 45 mm.

Franck Muller, Cintrée Curvex, Imperial Tourbillon,No. 02, Ref. 5850, 1997.Extremely fine and rare, tonneau shaped, 18K yellow gold gentleman's wristwatch with one minute tourbillon escapement, 48 hours power reserve, blue leather strap, 18K yellow gold Franck Muller buckle. Accompanied by fitted box and certificate.

C. two body, massive, polished, transparent dedicated back with screws, sapphire crystal. D. in translucent blue enamel on guilloché gold with applied gold radial Breguet numerals, on the 6, auxiliary second dial and visible tourbillon cage. "Spade" gold hands. M. Cal. TFM95 first quality, engraved, 19 jewels, lever escapement, monometallic balance adjusted for heat, cold isochronism and 5 positions, self-compensating Breguet balance-spring, three-arm polished steel tourbillon cage.Dial, case and movement signed.Dim. 45 x 32 mm.

Louis Berthoud à Paris, No. 2521, sold toMr. Blanchard de Pigou, on 20 March 1791,for 60 Louis.Fine and very rare 18K gold, quarter dumb repeating pocket chronometer.

C. Double body, polished, by Joly (Master mark),No. 199 with Paris hallmarks for 1789. D. White enamel by Morimont (signed on the enamel backing), with Breguet numerals and subsidiary seconds. Blued steel Breguet hands with skeletonised tips. M. Gilt brass, full plate inverted, with cylindrical pillars secured by screws, fusee with chain and maintaining power, later spring detent escapement, plain brass three-arm balance beneath the dial, flat balance spring with bimetallic compensation curb on the index. Repeating on the case by depressing te pendant.Signed on the dial and back plate.Diam. 53 mm.

Rieussec, Hger. du Roi, Chaudé & Bruneau, rue Neuve des Petits Champs, No. 13. Chronographe, Brevet d'invention, No.4, circa 1845.Extremely rare and large silver cased inking chronograph with five minute progressive recorder.

C. Three body massive "quatre baguettes" polished. Gilt brass hinged cuvette. D. White enamel with Arabic numerals and subsidiary minute register. Blued-steel arrow patent inking hand. M. 26''', frosted and gilt full-plate, cylinder escapement, plain balance, flat spring. Stop watch and inking push-pieces in the band. The hand of the five minute recorder is running anti-clockwise.Signed on the cuvette.Diam. 71 mm.

Attributable to Frédéric Houriet, No. 50, Swiss,circa 1820.Very fine and rare 18K gold hunting cased, diamond-set pocket chronometer.

C. Custom made by Jules Perot (Master mark) five body, massive with engine-turned cover and back, old cut diamond set pendant and rose-cut diamond set bow. Hinged gilt brass cuvette engraved with technical details. D. White enamel with Roman numerals, outer minute ring and sunk subsidiary seconds. Blued steel Breguet hands. M. 24''', frosted and gilt, three-quarter plate, with cylindrical pillars secured by screws, the back plate indented for the barrel secured by a bridge, the fusee with chainnd maintaining power, 13 jewels, spring detent escapement, two-arm compensation balance with two trapezoidal weights and timing screws, free sprung blued steel helical balance spring.Diam. 66 mm.

Audemars Piguet, Genève, John Shaeffer Répétition Minutes, No. 2, movement No. 445578,case No. D 80683, 1990's.Very fine, minute-repeating, jumping-hour, cushion shaped, 18K yellow gold gentleman's wristwatch, with leather strap and 18K yellow gold Audemars Piguet buckle.

C. three body, massive, polished and brushed, "guilloché" bezel, transparent back. D. white enamel with black enamelled Breguet numerals, auxiliary seconds dial, aperture for the jumping-hours. "Cathédrale" white gold hand. M. Cal. 2865, gilt, "fausses côtes" decoration, 34 jewels, lever escapement, monometallic balance adjusted for heat, cold isochronism and 5 positions, shock-absorber, self-compensating flat balance-spring, repeater on gongs by means of a slide on the band.Dial, case and movement signed.Dim. 34 x 34 mm.