Perret & Martin, Geneva, circa 1900. Very fine and rare 18K gold hunting-cased keyless pocket chronometer with one-minute tourbillon regulator and detent escapement.

C. Four-body, "pomme et filet", polished, reeded band, gold-hinged cuvette over glazed gold bezel for viewing the movement. D. Silver, snap-on fit, punched "AI" on the reverse, Roman numerals separated by engraved floral and foliate engraving, outer dot minute track, center and edges with applied varicolored gold floral and foliate pattern, subsidiary sunk seconds, outermost decorated with engine-turned pattern. Blued steel "spade" hands. M. 45 mm. (20???), nickel and damascened in unusual dot and zigzag patterns, 14 jewels, 3-arm Auguste Grether type carriage with pivoted detent escapement, cut bimetallic compensation balance with gold temperature and mean screws, blued steel balance spring with Phillips? outer terminal curve and protruding perpendicular overbanking prevention pin with two corresponding stop pins mounted on the balance arm, index regulator. Signed on dial and movement, case punched "TMC". Diam. 56 mm.

Patek Philippe & Cie, Genève, No. 868248, case No. 665024, Ref. 2499, first series, retailed by Frec-cero, made in 1951, sold on September 29, 1955. Production of this reference started in 1951. Exceptional and highly important astronomic, 18K pink gold gentleman's wristwatch with square button chronograph, 30-minute register, internal pulsometer, perpetual calendar and moon phases, with 18K pink gold Patek Philippe buckle. Accom-panied by the "Extrait des Registres".

C. three-body, solid, polished, concave bezel, fluted curved lugs, sapphire crystal. D. matte silver with applied pink gold Arabic numerals, auxiliary dials for the seconds, the 30-minute register, graduation for the days of the month, outer pulsometer graduation for 15 pulsations, apertures for the days of the week, the months and the moon phases. Pink gold "Feuille" hands. M. Cal. 13 ''' CC, rhodium-plated, "fausses-côtes" decoration, 23 jewels, straight line lever escapement, cut bimetallic balance, 8 adjustments, Breguet balance-spring, micrometer regulator. Dial, case and movement signed. Diam. 38 mm.

Patek Philippe & Cie, Genève, No. 771612, case No. 2866720, Ref. 3940. Production of this reference started in 1985, sold on July 25, 1989. Very fine, astronomic, self-winding, 18K yellow gold gentle-man's wristwatch with perpetual calendar and moon phases, 18K yellow gold Patek Philippe buckle. Accompanied by a mahogany wooden fitted box, a black and yellow gold push-piece for quick change of the date and certificate.

C. two-body, solid, polished, concave and stepped bezel, sap-phire crystal. D. matte silver with applied yellow gold indexes, auxiliary dials for the days of the month, of the week, the months, the 24 hours, and the leap year, aperture for the moon phases. "Dauphine" yellow gold hands. M. Cal. 240 Q, stamped with the Geneva Quality Hallmark, rhodium-plated, "fausses-côtes" decoration, 27 jewels, lever escapement, Gyromax balan-ce adjusted to heat, cold, isochronism and 5 positions, shock-absorber, self-compensating free-sprung flat balance-spring, mobile stud bearer, 22K gold micro-rotor mounted on ball bearings. Dial, case and movement signed. Diam. 36 mm.

Patek Philippe & Cie, Genève, No. 3046076, case No. 4010724, Ref. 3970/E. Production of this reference started in 1986, sold on July 11, 2000. Very fine astronomic, 18K yellow gold gentleman's wrist-watch with round button chronograph, register, perpetual calendar and moon phases, an additional 18K yellow gold back, a yellow gold and black push-pin and an 18K yellow gold Patek Philippe deployant clasp. Accompanied by a maho-gany fitted box and certificate.

C. three-body, solid, polished, screwed-down transparent case back, concave bezel, curved and fluted lugs. D. matte silver with applied gold indexes, auxiliary guilloché sunk dials for the seconds and the 24 hours, the 30-minute register and the leap year, graduation for the days of the month, outer 1/5th second scale, aperture for the days of the week, the months and the moon phases. "Bâton" yellow gold hands. M. Cal. 27-70 Q, stam-ped with the Geneva Quality Hallmark, rhodium-plated, "faus-ses-côtes" decoration, 24 jewels, lever escapement, Gyromax balance ajusted to heat, cold, isochronism and 5 positions, shock-absorber, self-compensating free-sprung Breguet balance spring. Dial, case and movement signed. Diam. 36 mm.

Patek Philippe & Cie, Genève No. 1958011, case No. 2980930, Ref. 5050J-018. Produced in the 1990's, sold on May 19, 2000. Very fine, astronomic, center-seconds, self-winding, 18K yellow gold gentleman's wristwatch, with perpetual calendar, retrograde date display, leap year and phases of the moon, leather strap and 18K yellow gold Patek Philippe buckle. With electrically driven leather-covered fitted wooden box for winding the watch. Accompanied by certificate.

C. three-body, solid, polished, concave bezel, fluted lugs. D. matte silver with applied yellow gold Roman numerals, apertures for the days of the week, the months, the moon phases, and the leap year, retrograde date sector. M. Cal. 315S QR aut., stamped with "Poinçons de Genève", rhodium-plated, "fausses-côtes" decora-tion, 31 jewels, lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock-absorber, self-compensating free-sprung flat balance-spring. Dial, case and movement signed. Diam. 36 mm.

Patek Philippe & Cie, Genève, No. 1958924, case No. 4138715, Ref. 5059P-001. Produced and sold in 2000. Very fine, massive, astronomic, center-seconds, self-winding, water-resistant, platinum gentleman's wristwatch with perpetual calendar, moon phases, retrograde date, 48 hours autonomy, a platinum Patek Philippe deployant clasp and black and platinum push-piece. With electrically driven leather-covered fitted wooden box for winding the watch. Accompanied by certificate.

C. three-body, solid, polished, hinged case back, sapphire crystal, rounded band, pyramidal bezel, straight lugs, white gold screwed bars. D. white with painted radial Roman numerals, concentric, retrograde sector for the days of the month, outer 1/5th second scale, apertures for the days of the week, the months, the leap year and the moon phases. "Feuille" steel hands. M. Cal. 315/136 SQR aut., stamped with the Geneva Quality Hallmark, rhodium-plated, "fausses-côtes" decoration, 31 jewels, straight line lever escapement, Gyromax balance adjusted for heat, cold, isochronism and 5 positions, shock-absorber, self-compensating free-sprung flat balance-spring, 21K gold rotor. Dial, case and movement signed. Diam. 36 mm.

Patek Philippe & Cie, Genève, No. 3235216, case No. 4171744, Ref. 5150G "T-150" pro-duced in a limited edition of 150 examples in 2001, to commemorate the 150th anni-versary of the relationship between Patek Philippe and Tif-fany & Co. All examples have been sold. Very fine and rare, astronomic, center-seconds, self-winding 18K white gold gentleman's wristwatch with semi-instan-taneous digital triple date annual calendar with indication of the weeks for one year, moon phases and 48-hour autonomy, with an 18K white gold Patek Philippe buckle. Accompanied by a mahogany fitted box and certificate.

C. "Officier and Bassine-style" (reminiscent of the wristwatches worn by officers during WWI), three-body, solid, polished, engraved hinged case back covering a sapphire crystal dome, rounded bezel and band with four correctors, protected "Louis XV"-style winding-crown, straight and curved lugs. D. ivory-co-lored with applied white gold bâton indexes, the Tiffany "T" at 12 o'clock, concentric inner second scale, apertures for the days of the week, the months in Arabic numerals, the days of the month and the moon phases. Faceted "Dauphine" white gold hands. M. Cal. 315 S QA LU, stamped with the Geneva Quality Hallmark, rhodium-plated, "fausses-côtes" decoration, 35 jewels, straight line lever escapement, Gyromax balance, shock-absorber, self-compensating free-sprung flat balance-spring, mobile stud bearer, 21K gold central rotor, unidirectional winding, 21600 vibrations/hour. Dial and movement signed. Diam. 36 mm.

Patek Philippe & Cie, Genève, "Pagoda", No.1859437, case No. 4014179, Ref. 5500. Produced in a limited edition of 150 exam-ples in platinum in 1997, sold on November 27, 1997. All examples have been sold. Very fine and very rare, rectangular, flared, "bombé", "Pagoda"-shaped, platinum gentleman?s wristwatch with a platinum Patek Philippe buckle. Accompanied by a comme-morative booklet, a certificate, an attestation and a "Bulletin de Marche" delivered by the "Contrôle Officiel Suisse des Chronomètres".

C. two-body, solid, polished, concave sides, case back engraved "Commemoration 1997 Pagoda". D. black with applied white gold Roman numerals, auxiliary seconds dial. "Feuille" white gold hands. M. Cal. 215, stamped with the Geneva Quality Hallmark, rhodium-plated, "fausses-côtes" decoration, 18 jewels, lever escapement, Gyromax balance adjusted for heat, cold, isochronism and 5 positions, shock-absorber, self-compensating free-sprung balance-spring. Dial, case and movement signed. Dim. 29 x 41 mm.

Rolex "Anti-Magnetic", Ref. 3055. Produced in the 1950's. Fine and rare 18K yellow gold mid-sized wristwatch, with square-shaped button chronograph, regis-ters, tachometer and a gold-plated Rolex buckle.

C. three-body, polished, stepped bezel, concave lugs. D. black with applied lozenge-shaped and dart indexes, auxiliary seconds and 30-minute register dials, outer tachometer graduation. "Alpha" gold hands. M. Cal. 10 1/2''' rhodium-plated, 17 jewels, straight line lever escapement, monometallic balance, shock-absorber, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 30 mm.

Rolex Oyster Perpetual "Explorer", Superlative Chronometer Officially Certified, Ref. 1016, retailed by Cartier. Production of this reference started in the 1960's. Fine and very rare tonneau-shaped, center-seconds, self-win-ding, water-resistant, stainless steel gentleman's wristwatch with a stainless steel Jubilé bracelet.

C. three-body, polished and brushed, screwed-down case back and crown. D. black with tritium-coated Arabic numerals and bâ-ton and dart indexes, above the 6, the "Cartier" signature. "Skeleton" tritium-coated hands. M. Cal. 1570, rhodium-plated, 26 jewels, straight line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock-absorber, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 35 mm. Approx. overall length 200 mm.

Rolex Oyster Perpetual "Milgauss", Superlative Chronometer, Officially Certified, Ref. 1019. Production of this reference started in 1966. Fine, water-resistant to 50 m., center-seconds, self-winding, stainless steel gentleman?s wristwatch with a stainless steel Oyster bracelet. Accompanied by original certificate.

C. three-body, polished and brushed, screwed-down case back and crown, anti-magnetic protecting cap. D. matte silver with steel and black indexes. "Bâton" steel and black hands. M. Cal. 1580, rhodium-plated, 26 jewels, straight line lever escapement, monometallic balance adjusted to 5 positions and temperature, shock-absorber, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 37 mm. Approx. overall length 200 mm.

Rolex Oyster Cosmograph, Ref. 6239, so-called "Paul Newman", with steel bezel protected by a transparent ring. Produced in the 1970's. Very fine and rare water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers and tachometer, with stainless steel Oyster bracelet.

C. three-body, polished and brushed, screwed-down case back, tachometer graduation on the bezel to 300 units per hour. D. bicolor matte silver and black with tritium-coated steel indexes, auxiliary dials for the seconds, the 12-hour and 30-minute registers. "Bâton" tritium-coated steel hands. M. Cal. 13'", rhodium-plated, 17 jewels, lever escapement, monometallic balance adjusted to 3 positions, shock-absorber, self-compensating Breguet balance spring. Dial, case and movement signed. Diam. 37 mm. Approx. overall length 185 mm.

Rolex Cosmograph "Daytona", Ref. 6239, with black "anti-reflets" bezel. Produced in the 1960's. Very fine, water-resistant, 18K yellow gold gentleman's wristwatch with round button chronograph, registers and tachometer, with 18K yellow gold Oyster bracelet.

C. three-body, solid, polished and brushed, screwed-down case back, tachometer graduation on the bezel to 200 units per hour. D. bicolor champagne and black with tritium-coated applied gold indexes, auxiliary dials for the seconds, the 12-hour and 30-minute registers. "Bâton" tritium-coated gold hands. M. Cal. 13???, rhodium-plated, 17 jewels, lever escapement, monometallic balance adjusted to 3 positions, shock-absorber, self-compensating Breguet balance spring. Dial, case and movement signed. Diam. 37 mm. Approx. overall length 205 mm.

Rolex Oyster Cosmograph "Daytona", Ref. 6263/6265, with steel bezel. Production of this reference started in 1971. Fine water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers and tachometer. Accompanied by a stainless steel Oyster bracelet.

C. three-body, polished and brushed, screwed-down case back, crowns and buttons, tachometer graduation on the steel bezel to 200 units per hour. D. bicolor matte silver and black with applied steel indexes, auxiliary "guilloché" dials for the seconds, the 12-hour and 30-minute registers."Bâton"tritium-coated steel hands. M. Cal. 13''', rhodium-plated, 17 jewels, straight line lever escapement, monometallic balance adjusted to 3 positions, shock-absorber, self-compensating Breguet balance spring. Dial, case and movement signed. Diam. 37 mm. Approx. overall length 185 mm.

Rolex Oyster Cosmograph "Daytona", Ref. 6263, with black "anti-reflets" bezel. Production of this reference started in 1971, sold on December 23, 1984. Fine water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers and tachometer. Accompanied by a stainless steel Oyster bracelet, fitted box and certificate.

C. three-body, polished and brushed, screwed-down case back, crowns and buttons, tachometer graduation on the black bezel to 200 units per hour. D. bicolor matte silver and black with applied steel indexes, auxiliary "guilloché" dials for the seconds, the 12-hour and 30-minute registers. "Bâton"tritium-coated steel hands. M. Cal. 13''', rhodium-plated, 17 jewels, straight line lever escapement, monometallic balance adjusted to 3 positions, shock-absorber, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 37 mm. Approx. overall length 185 mm.

Rolex Oyster, Superlative Chronometer Offi-cially Certified Cosmograph, Ref. 6263/6265, with black "anti-reflets" bezel. Produced in the 1970's. Very fine and rare, water-resistant, 14K yellow gold gentle-man's wristwatch with round button chronograph, registers and tachometer. Accompanied by a gold-plated Rolex buckle.

C. three-body, solid, polished and brushed, screwed-down case back, buttons and crown, tachometer graduation on the black bezel to 200 units per hour. D. bicolor black and satin-finish gold with applied gold tritium-coated indexes, auxiliary "guilloché" dials for the seconds, the 12-hour and 30-minute registers. "Bâton" tritium-coated gold hands. M. Cal. 13''', rhodium-plated, 17 jewels, lever escapement, monometallic balance adjusted to 3 positions, shock-absorber, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 37 mm.

Rolex Oyster Cosmograph "Daytona" , Ref. 6263/6265, with black "anti-reflets" bezel. Production of this reference started in 1971. Fine water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers and tachometer, with a stainless steel Oyster bracelet. Accompanied by a box and certificate.

C. three-body, polished and brushed, screwed-down case back, crowns and buttons, tachometer graduation on the black bezel to 200 units per hour. D. bicolor matte silver and black with applied steel indexes, auxiliary "guilloché" dials for the seconds, the 12-hour and 30-minute registers. "Bâton" tritium-coated steel hands. M. Cal. 13''', rhodium-plated, 17 jewels, straight line lever escapement, monometallic balance adjusted to 3 positions, shock-absorber, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 37 mm. Approx. overall length 200 mm.

Patek Philippe & Cie, Genève, No. 921373, case No. 626625, Ref. 1526, 1st series. Production of this watch and of the reference started in 1941. Extremely fine and probably unique, astronomic, 18K yellow gold gentleman's wristwatch with perpetual calendar and moon phases, special dial, and by an 18K yellow gold Patek Philippe buckle. Accompanied by the Extract from the Archives and by a Patek Philippe letter of explanation.

C. three-body, solid, polished and brushed, concave bezel and lugs. D. matte silver with applied yellow gold indexes and Arabic numerals, auxiliary seconds dial, concentric, inner graduation for the days of the month, apertures for the days of the week, the months and the moon phases. "Feuille" yellow gold hands. M. Cal. 12'''-120 QP, rhodium-plated, "fausses côtes" decoration, 18 jewels, lever escapement, monometallic balance adjusted to heat, cold, isochronism and 5 positions, Breguet balance-spring, micrometer regulator. Dial, case and movement signed. Diam. 35 mm.

Patek Philippe & Cie, Genève, No. 966945, case No. 665500, Ref. 1526, 2nd series. Production of this reference started in 1941. Extremely fine and rare, astronomic, 18K pink gold gentleman's wristwatch with perpetual calendar and moon phases, with an 18K pink gold Patek Philippe buckle.

C. three-body, solid, polished and brushed, concave bezel and lugs. D. matte silver with applied pink gold dot indexes and Arabic numerals, auxiliary seconds dial with inner scale and outer graduation for the days of the month, apertures for the days of the week, the months and the moon phases. "Feuille" pink gold hands. M. Cal. 12'''-120 QP, rhodium-plated, "fausses-côtes" decoration, 18 jewels, straight line lever escapement, cut bimetallic balance adjusted for heat, cold, isochronism and 5 positions, Breguet balance-spring, micrometer regulator. Dial, case and movement signed. Diam. 35 mm.

Patek Philippe & Cie, Genève, No. 928698, case No. 646254, Ref. 1526, 2nd series. Production of this reference started in 1941. Extremely fine and rare, astronomic, 18K yellow gold gentleman's wristwatch with perpetual calendar and moon phases, with an 18K yellow gold Patek Philippe buckle.

C. three-body, solid, polished and brushed, concave bezel and lugs. D. matte silver with applied yellow gold dot indexes and Arabic numerals, auxiliary seconds dial with inner scale and outer graduation for the days of the month, apertures for the days of the week, the months and the moon phases. "Feuille" yellow gold hands. M. Cal. 12'''-120 QP, rhodium-plated, "fausses-côtes" decoration, 18 jewels, straight line lever escapement, cut bimetallic balance adjusted for heat, cold, isochronism and 5 positions, Breguet balance-spring, micrometer regulator. Dial, case and movement signed. Diam. 35 mm.