Precision Timekeeper with 1 ComplicationHonoré Pons, invented and executed in an XII (Sept. 24, 1803 - Sept. 23, 1804)Extremely rare and very fine dead center-seconds mantle regulator with one-second constant force detent escapement.

C. Dark green rectangular marble base with gilt brass circular feet, wooden frame with four square columns supported by rectangular wooden block, classical wooden top with molded edges. D. Small enamel, set at the top with Roman hour chapter and outer minute ring. Center-seconds with white enamel ring with dot divisions and five-seconds Arabic markers, escapement visible in the center. Blued steel Breguet hands. M. Humpback, 16,5cm high, 14 cm wide, going barrel with five-wheel train, brass-steegridiron pendulum with knife-edge suspension and beat adjustment on the crutch, ingenious remontoir with escape wheel driven by an extremely small hollow weight, weighing less than one gram, whose cord is wound directly on the escape wheel arbor, constantly giving the same one-directional impulse. Winding is achieved as follows: unlocking jewel mounted on the T-shaped impulse frame, set on the same arbor as the crutch releases the detent, the escape wheel giving an impulse to the steel pin. Aftr the impulse is delivered a pin mounted on the escape wheel lifts a lever, unlocking the train, and consequently another pin on the last train wheel lifts the lever set on the escape wheel, locking it on the detent and winding the small weight. Most of the escapement detents and levers have adjustments; when adjusted properly it becomes a remarkably accurate detached escapement.Signed on the movement.Dim. Height 50 cm, base width 31cm.

Precision Timekeeper with 1 ComplicationPaul Garnier, Horloger du Roi, Paris, circa 1845.Very fine and rare, center-seconds astronomical 6 month-going mantle regulator with remontoir d'égalité wound every 30 seconds.

C. Two blocks of black marble joined by a molded black marble section, small extended marble molding at the top supporting the movement. D. White enamel, flat, Roman numerals, outer minute ring. Blued steel Breguet hands. M. Shaped, humpback, solid brass, pin-wheel escapement, steel-brass Ellicott type compound compensation pendulum, double spring suspension, remontoir wheel mounted on a pivoted rocking bar terminated by a weight on one end and a detent on the other, which, when the weight fallsto a certain point, releases a fly mounted on the 4th pinion of the train which drives the remontoir wheel down, winding the remontoir, Maltese stop work.Signed on the dial and movement.Dim. Height 50 cm, base width 17 cm.

Precision Timekeeper with 1 ComplicationWinnerl, France, No. 150, circa 1840.Very fine small, mahogany, 49 hour-going marine chronometer with power reserve indicator

C. Two-body, solid mahogany, sliding observation lid and external brass handles, brass bowl and circular gimbal suspension. D. Silvered with Roman numerals, subsidiary seconds and up-and-down scale. 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 cylindrical weights and timing screws. Free-sprung blued steel helical balance spring wih terminal curves.Signed on the dial.Dial diam. 75 mm.Dim. 14,5 x 14,5 x 14 cm.

Precision Timekeeper with 1 ComplicationVissière, 56 rue de l'Ouest, Paris, No. 243, sold to the Dépôt de la Marine, circa 1860.Fine small mahogany, 49 hour-going, marine chronometer with regulator dial and power reserve indicator.

C. Three body mahogany box with external brass handles, glazed upper section with hinged lid. Brass bowl and gimballed suspension mounted on shock absorber. D. Silvered with subsidiary small Roman hour chapter ring, symmetrical Arabic seconds ring and up-and-down sector below, outer Arabic minutes ring on the border. Blued-steel Breguet hands. M. Brass full plate with cylindrical pillars secured by screws, fusee with maintaining power, Earnshaw type spring detent escapement two-arm bimetallic copensation balance with cylindrical weights and timing screws. Free sprung polished-steel helical balance spring with terminal curves and diamond end-stone.Signed on the box, dial and movement.Dial diam. 80 mm.Dim. 16 x 16 x 17 cm.

Precision Timekeeper with 1 ComplicationO. Dumas, Successeur de Gannery, No. 126, circa 1851.Very fine and rare magogany 8 day-going marine chronometer with power reserve indicator.

C. Three-body, mahogany with external brass handles, glazed upper section, the hinged lid with brass corners. Brass bowl and gimbal suspension. D. Frosted and silvered with Roman numerals, subsidiary seconds and up-and-down scale. Blued steel Breguet hands. M. Brass three-quarter plate with with main frame and sub-frame, conical pillars, fusee with chain and maintaining power, spring detent escapement, entirely fitted including the balance on a spotted finished platform, two-arm compensation balnce with cylindrical weights and timing screws, free-sprung blued steel helical balance spring with terminal curves.Signed on the dial and back plate.Dial diam. 110 mm.Dim. 18 x 17,5 x 17,5 cm.

Precision Timekeeper with 1 ComplicationPatek et Czapek, a Genève, No. 713, sold to Princess Galitzin on March 8, 1844.Exceptionally fine and probably unique, 20K gold, keyless quarter-repeating watch with gilt and engraved platinum movement, ruby duplex escapement with early attempt at auxiliary balance compensation and Audemars winding and setting system. Accompanied by Patek Philippe Extract from the Archives.

C. Four-body, "Empire", back cover with engraved coat-of-arms of Prince Galitzin, reeded band, gold hinged glazed cuvette. D. White enamel, radial Roman numerals, outer minute divisions. M. 42,8 mm (19'''), gilt platinum engraved with foliate and floral patterns, bridge caliber with hanging barrel, 22 jewels, ruby duplex escapement, cut bimetallic compensation balance with early "wings" on the arms for restricting the movement of the lamina segments in heat, blued steel flat balance spring, Audears winding and setting mechanism with mode-switching bolt on the band at 11 o'clock, repeating on gongs by a slide in the band.Signed on the movement, movement and case stamped with the same number.Diam. 48 mm.

Timekeeper with 4 ComplicationsPatek, Philippe & Cie., Genève, No. 27171, made for Thomas Randon Fisher, circa 1867.Extremely fine and probably unique, 18K gold keyless, double-train, early independent dead-seconds watch with fifth-second foudroyante and return-to-zero mechanism.

C. Four-body, engine-turned on both covers, reeded band, gold cuvette, gold safety bolt on the band at 2 o'clock, independent dead-seconds control push-piece at 1 o'clock. D. White enamel, radial Roman numerals, outer minute divisions, subsidiary sunk seconds with fifth-second "foudroyante" scale. Gold "spade" hands. M. Gilt brass, double-train, 26 jewels, straight line counterpoised lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, independent dead-secons mechanism, set over the going train under single bridge, ingeniously driven by a wheel set underneath the independent train center wheel, powered by a small hairspring-like spring set on the center wheel, with the jumps controlled by eight-arm star wheel released by a five-leaf pinion of the last independent train wheel. The fifth-second jumping is controlled by a separate mechanism via a "break" wheel set on the escape wheel and a flirt, regular stop mechanism by blocking the flirt, ingeniousreturn-to-zero mechanism by letting both, the independent seconds and foudroyante, drive to zero position and stopping it there.Signed on the case.Diam. 55 mm.

Timekeeper with 6 ComplicationsPatek Philippe & Cie., Genève, No. 65450, case No. 65450, made for Roussialle, Lyon, circa 1882.Very fine and rare 18K gold astronomical, perpetual calendar, minute-repeating keyless watch with phases and age of the moon. Accompanied by original certificate.

C. Four-body, "variée", with concave bezels, polished with engraved coat-of-arms on the back, bezels with reeded edges, gold hinged cuvette. D. White enamel, radial Roman numerals, outer minute ring, four subsidiary dials for days of the week, date concentric with small seconds, months and aperture for the enameled phases of the moon on a gold base with the age of the moon on the upper border. Blued steel "spade" hands. M. 42,5 mm (19'''), nickel, "fausses côtes" decoration, 31 jewels, straightine calibrated lever escapement, cut bimetallic balance, Breguet balance spring, wolf-tooth winding wheels repeating on gongs by a slide in the band.Signed on the dial and the movement, back cover stamped inside with maker's mark, cuvette engraved with the retailer's name.Diam. 55 mm.

Timekeeper with 5 ComplicationsPatek Philippe, Genève, No. 65183, case No. 200554, circa 1882.Fine 18K gold, hunting-cased, keyless astronomical watch with instantaneous perpetual calendar and phases and age of the moon.

C. Four-body, "variée", with concave bezels, polished back, front with applied gold initials "CW", reeded edges, gold hinged cuvette. D. White enamel, radial Roman numerals, outer minute ring, four subsidiary sunk dials for days of the week, date concentric with seconds, months, and aperture for phases of the moon with lunar calendar scale. Blued steel "spade" hands. M. 42 mm (18 1/2'''), nickel, "fausses côtes" decoration, 20 jewels, straight line "moustache" lever escapement, cut bimetallic copensation balance, Breguet balance spring, index regulator with the scale on the center bridge.Signed on dial, case and movement.Diam. 54 mm.

Precision Timekeeper with 7 ComplicationsPatek, Philippe & Cie., Genève, No. 111543, case No. 226407, circa 1899, property of Prince Orloff in 1901.Very fine and important large 18K gold and enamel hunting-cased, keyless astronomical minute-repeating watch with chronograph, perpetual calendar, phases and age of the moon. Accompanied by the Extract from the Archives.

C. Four-body, "bassine", front engraved with coat-of-arms under a crown, back with crown in black champlevé enamel encircled with geometrical pattern decoration, gold hinged cuvette. D. White enamel, radial Arabic numerals, outer minutes and seconds rings, four subsidiary sunk dials for days of the week, months and subsidiary seconds, concentric with the date and aperture for phases of the moon with sector for its age. Gold "Louis XV" hands. M. 44,3 mm (19 1/2'''), nickel, 35 jewels, straight lie calibrated lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, repeating on gongs by a slide in the band.Signed on dial, case and movement.Diam. 56 mm.

Timekeeper with 7 ComplicationsPatek, Philippe & Cie., Genève, No. 97921, case No. 224120, made for Bailey, Banks and Biddle, circa 1898.Very fine and important 18K gold hunting-cased, keyless astronomical minute-repeating watch with chronograph, perpetual calendar, phases and age of the moon.

C. Four-body, "bassine", polished, gold hinged cuvette. D. White enamel, radial Roman numerals, outer minute and seconds divisions with five-minutes/seconds Arabic markers, four subsidiary sunk dials for days of the week, date concentric with small seconds, months, and phases of the moon aperture with sector for its age. Blued steel, "spade" hands. M. 42,5 mm (19 1/2'''), nickel, 35 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance with blued steel Breguet baance spring, "swan-neck" micrometric regulator, repeating on gongs by a slide in the band.Signed on dial, case and movement.Diam. 54 mm

Timekeeper with 4 ComplicationsPatek, Philippe & Cie., Genève, No. 157133, case No. 269685, made for Francis Thomas Anderson, Junkin, Virginia, circa 1910.Very fine 18K gold, keyless minute-repeating watch with split-seconds chronograph and 30-minute register.

C. Four-body, "bassine", polished, back cover with polychrome champlevé enamel monogram, gold hinged cuvette, chronograph safety bolt on the band at 11 o'clock. D. White enamel, Breguet numerals, outer minute/seconds divisions with five-minute red Arabic markers. Gold "Louis XV" hands. M. 40 mm (17 3/4'''), nickel, "fausses côtes" decoration, 38 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, repeating on gongs by a slidin the band, chronograph set on the back plate, split mechanism under the dial in the manner of Victorin Piguet.Signed on dial, case and movement.Diam. 45 mm.

Timekeeper with 2 ComplicationsPatek, Philippe & Cie., Genève, No. 111636, case No. 224101, circa 1900.Very fine 18K gold, keyless minute repeating watch with a chronograph.

C. Four-body, "bassine", polished, gold hinged cuvette, chronograph safety bolt on the band at 11 o'clock.D. White enamel, radial Arabic numerals, outer minute/seconds divisions with five-minute red Arabic markers. Blued steel "spade" hands. M. 40 mm (17 3/4'''), nickel, "fausses côtes" decoration, 34 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, repeating on gongs by a slide in the band.Signed on dial, case and movement.Diam. 49 mm.

Timekeeper with 1 ComplicationPatek, Philippe & Cie., Genève, No. 138410, case No. 268057, circa 1907.Very fine 18K gold keyless minute-repeating watch.

C. Four-body, "bassine", polished, gold hinged cuvette. D. White enamel, Breguet numerals, outer minute ring with red five-minute Arabic markers, subsidiary sunk seconds. Gold "Louis XV" hands. M. 37,8 mm, nickel, "fausses côtes" decoration, 30 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, repeating on gongs through activating slide in the band, "swan neck" micrometric regulator.Signed on dial, case and movement. Diam. 46 mm.

Precision Timekeeper with 1 ComplicationPatek, Philippe & Cie., Genève,No. 132658, case No. 232485, made for Theo. Brinkmann, Naples, Italy, circa 1905.Very fine silver keyless deck chronometer with winding indicator and special balance, accompanied by an Extract from the Archives.

C. Four-body, "bassine", polished, hinged silver cuvette. D. Matte silver, radial Roman numerals, outer minute ring, subsidiary seconds, 36-hour up-and-down indicator set below 12 o'clock. Blued steel "spade" hands. M. 48 mm (21'''), nickel, "fausses côtes" decoration, 23 jewels, straight line calibrated lever escapement, cut bimetallic anibal-brass Guillaume compensation balance with Breguet balance spring with diamond endstone, "swan-neck" micrometric regulator, interesting up-and-down mechanim in which the movement is transmitted by a screw set in the barrel arbor which moves up during winding and down when unwinding, acting on a rack meshing with the spring -loaded winding indicator hand pinion.Signed on dial, case and movement, movement engraved twice with serial number.Diam. 60 mm.

Timekeeper with 1 ComplicationPatek, Philippe & Cie., Genève, No. 138413, case No. 268060, circa 1907.Very fine 18K gold, keyless, minute-repeating watch.

C. Four-body, "bassine pincée", back cover with engraved monogram "JRM", gold hinged cuvette, concealed hinge.D. White enamel, Breguet numerals, outer minute ring with five-minute red Arabic markers, subsidiary sunk seconds. Blued steel "spade" hands. M. 37,8 mm (16 3/4'''), nickel, "fausses côtes" decoration, 30 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, repeating on gongs by a slide in the band.Signed on dial, case and movement.Diam. 46 mm.

Timekeeper with 3 ComplicationsPatek, Philippe & Cie., Genève, No. 137911, case No. 407906, circa 1905.Very fine 18K gold, keyless watch with split-seconds chronograph and 30-minute register.

C. Four-body, "bassine", polished with engraved initials "MBF" on the back, gold hinged cuvette, chronograph safety bolt on the band at 11 o'clock, concealed hinge. D. White enamel dial, Arabic numerals, outer minute and seconds divisions with five-minute Arabic markers, subsidiary sunk seconds, subsidiary sunk register dial at 12 o'clock. Blued steel "spade" hands.M. 38 mm (17'''), nickel, "fausses côtes" decoration, 29 jewels, straight line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, chronograph and split-seconds mechanisms set on the back plate, "swan-neck" micrometric regulator.Signed on dial, case and movement.Diam. 46 mm

Timekeeper with 3 ComplicationsPatek, Philippe & Cie., Genève, No. 197805, case No. 602587, made for Spaulding & Co., circa 1924.Very fine 18K gold keyless watch with split-seconds chronograph and 30-minute register.

C. Four-body, "bassine pincée", polished, gold hinged cuvette, chronograph safety bolt on the band at 11 o'clock, concealed hinge. D. White enamel, radial Arabic numerals, outer minutes and seconds divisions with five-minute Arabic markers, subsidiary sunk seconds, subsidiary sunk register dial at 12 o'clock. Blued steel "spade" hands. M. 38 mm (17'''), nickel, "fausses côtes" decoration, 30 jewels, straight line lever escapement, cut bimetallic compensation balance, blued steel Breguet balancepring, chronograph and split-seconds mechanisms set on the back plate, "swan-neck" micrometric regulator.Signed on dial, case and movement.Diam. 46 mm.

Precision Timekeeper with 1 ComplicationPatek, Philippe & Cie., Genève, No. 174841, case No. 174841, made for Tiffany, circa 1920.Very fine 18K gold, keyless, slim "EXTRA" quality minute-repeating watch.

C. Four-body, "bassine pincée", polished with engraved initials on the back cover, gold hinged cuvette. D. White enamel, Breguet numerals, outer minute ring, subsidiary sunk seconds. Blued steel "spade" hands. M. 40 mm (17 3/4'''), nickel, "fausses côtes" decoration, 31 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, repeating on gongs by a slide in the band.Signed on case and movement, dial signed by the retailer.Diam. 47,7 mm.

Timekeeper with 1 ComplicationPatek, Philippe & Cie., Genève, No. 174594, case No. 174594, circa 1916.Very fine 18K gold slim keyless minute-repeating watch.

C. Four-body, "bassine pincée", polished with small engraved initials in the center of the back cover, gold hinged cuvette. D. Matte gilded, champlevé Breguet numerals, outer minute ring, subsidiary seconds. Blued steel "spade" hands. M. 38,6 mm (17'''), nickel, "fausses côtes" decoration, 29 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, repeating on gongs by a slide on the band.Signed on dial, case and movement.Diam. 46 mm.