Patek Philippe & Cie., Genève, No. 124942, case No. 235139, circa 1905. Very fine and large 18K gold keyless minute-repeating watch with split-seconds chrono-graph.

C. Four-body, "pomme et filet", polished, with engraved ini-tials on the back, gold hinged cuvette, chronograph safety bolt on the band at 11 o?clock adjacent to the split seconds button. D. White enamel, radial Arabic numerals, outer minute track, outermost chronograph track with five minute/seconds Arabic markers, subsidiary sunk seconds. Gold "Louis XV" hands. M. 43 mm. (19???), nickel, 35 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring, "swan-neck" micrometric regulator, chronograph mechanism on the back plate, split seconds mechanism under the dial, repeating on gongs through activating slide in the band. Signed on dial, case and movement. Diam. 53 mm.

Patek Philippe & Cie., Genève, No. 124521, case No. 232524, made for Spaul-ding & Co, Paris, circa 1903. Very fine 18K gold keyless minute-repeating watch with split-seconds chronograph and 30-mi-nute register.

C. Four-body, "bassine", triple-hinged, polished gold cuvette, chronograph blocking bolt at 11 o?clock. D. White enamel, Breguet numerals, outer minute track, outermost chronograph track with five-minute/seconds red Arabic markers, sunk minute register at 12 o?clock, subsidiary sunk seconds. Gold "Louis XV" hands. M. 38 mm. (17???) nickel, 39 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring, "swan-neck" micrometric regulator, chronograph and split seconds mechanisms on the back plate, repeating on gongs through activating slide in the band. Signed on the movement and case, dial and cuvette signed by the retailer. Diam. 47 mm.

Patek Philippe & Cie., Genève, No. 190 977, case No. 410868, sold to Henry Graves on November 11, 1925. Exceptionally fine and rare 18K gold keyless "Extra" adjusted pocket chronometer awarded Second Prize at the Geneva Observatory Timing Contest 1924-1925. Accom-panied by Extract from the Archives.

C. Four-body, "bassine", polished, gold hinged cuvette with inscription describing the Contest. D. Off-white enamel, Breguet numerals, outer minute track, subsidiary sunk seconds. Blued steel Breguet hands. M. 42 mm. (18???), nickel, "fausses côtes" decoration, pillar plate under the dial finished with "oeil de perdrix", 20 jewels, 8 adjustments, very high quality straight line calibrated equidistant lever escapement, anibal-brass Guillaume compensation balance with poising wings on the balance arm and gold temperature and mean screws, special alloy Breguet balance spring with inner and outer terminal curves, punched twice with Seal of Geneva Quality hallmarks, "swan-neck" micrometric regulator, special mainspring ratchet wheel click preventing overwinding and Maltese Cross stop work. Signed on dial, case and movement. Diam. 50 mm.

Patek Philippe & Cie., Genève, No. 198048, case No. 290540, made for Henry Graves Jr. in 1927. Exceptional, one of only two known, astronomical double barrel, eight day going large silver desk clock with perpetual calendar, phases of the moon and eight day power reserve indicator, accompanied by two original silver/gold/steel keys and matching calendar adjustment pin.

C. Rectangular, slanted like a desk top, hinged, when opened revealing a compartment for keys and small personal items, the corners decorated with four gold rosettes, Graves? coat-of-arms (an eagle surmounting a crown) at the bottom, top with applied stylized foliate decoration, two applied ribbons below 5 and 7 o?clock, laurel-leaf decorated bezel, side panels with applied silver and gold foliate decorations, the back panel en suite with additional laurel-leaf wreath, thin wooden base. The movement housed in a three-piece hinged-back case with winding and setting apertures. D. Silver, whitened and matted, champlevé radial Roman numerals, outer minute track, subsidiary date below 12 o?clock, center with two apertures for the days of the week and months, phases of the moon aperture above 6 o?clock concentric with leap year cycle indications and subsidiary seconds, up & down sector concentric with hands arbor. Blued steel "spade" hands. M. 53 mm. (23 1/2???), rhodium-plated, "fausses côtes" decoration, 21 jewels, straight line lever escapement, cut bimetallic compensation balance with gold screws, blued steel Breguet balance spring, "swan-neck" micrometric regulator, two barrels wound simultaneously, differential up & down mechanism. Signed on dial, case and movement, cuvette engraved "Made for Henry Graves Jr., New York". Dim. Depth 11.5 cm., width 8 cm., height 2 - 5.5 cm.

Patek Philippe & Cie., Genève, No. 161220, case No. 280134, made for The Sweeney Jewelry Co., Houston, Texas, circa 1912. Very fine 18K gold keyless pocket chrono-meter with 36-hour power reserve indi-cator, awarded the third prize at the Geneva Astronomical Observatory timing contest 1912-1913.

C. Four-body, "bassine", polished with concealed hinges, gold hinged cuvette engraved with the prize awarded. D. White enamel with Breguet numerals, outer minute track, sunk subsidiary seconds, sector for up-and-down indicator below 12 o’clock. Blued steel "spade" hands. M. 40.5 mm. (18’’’), "Extra" quality, rhodium-plated, "fausses-côtes" decoration, 21 jewels, counterpoised straight line lever escapement, anibal-brass Guillaume compensation balance, eight adjustments by C. Batifolier, Breguet balance spring with "swan-neck" micrometric index. Signed on the dial, case and movement. Diam. 50 mm.

Patek Philippe & Cie., Genève, "Mon-tre de Torpilleur" No. 193445, case No. 625963, Ref. 738, made in 1931, sold on April 18,1942. Exceptionally fine and rare silver, key-less, "Extra" adjusted pocket chronometer, awarded Second Prize at the 1931 Geneva Observatory Timing Contest. Accompanied by Extract from the Archives, Observatory of Geneva certificate and copies of the Bulletin de Marche.

C. Four-body, "bassine", polished, silver hinged cuvette. D. Silver, matted and whitened, champlevé radial Arabic numerals, outer minute track, subsidiary sunk seconds. Blued steel spade hands. M. 42 mm. (18???), nickel, "fausses côtes" decoration, pillar plate under the dial with "oeil de perdrix" finishing, 23 jewels, 8 adjustments, very high quality straight line calibrated equidistant lever escapement, anibal-brass Guillaume compensation balance with poising wings on the balance arm and gold temperature and mean screws, special alloy Breguet balance spring with inner and outer terminal curves, ruby banking pins in shape of small plates inserted into the bridge, punched twice with Seal of Geneva Quality marks, "swan-neck" micrometric regulator, special mainspring ratchet wheel click preventing overwinding and Maltese Cross stop work. Signed on dial, case and movement, case punched with Swiss and German silver marks, indicating that the watch was exported to Germany. Diam. 60 mm.

Jules Jürgensen, Copenhagen, made in Switzerland, No. 15172, circa 1895. Very fine and rare 18K gold hunting-cased keyless minute-repeating watch with split-seconds chronograph and 60-minute register.

C. Four-body, "bassine et filets", polished, gold hinged cuvette with engine-turned edge. D. White enamel, radial Roman numerals, outer minute track, outermost red seconds track, five-minute/seconds Arabic mar-kers. Blued steel Breguet hands. M. 43 mm. (19???), nickel, 38 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring, index regulator with Jürgensen?s patented scale, chronograph set on the back plate, Jürgensen?s bow setting, split seconds mechanism under the dial, repeating on gongs through activating slide in the band. Signed on dial, case and movement. Diam. 54 mm.

Eduard JeanRichard, Le Locle, made for Paul Ditisheim, Chaux-de-Fonds, No. 3395/9231/11948, circa 1910, with British import marks for 1911-12. Very fine and very rare 18K gold hunting-cased keyless minute-repeating carillon watch with Westminster chimes.

C. Four-body, "bassine" polished, concealed hinges, gold hinged cuvette. D. White enamel, radial Roman numerals, outer minute track, subsidiary sunk seconds. Blued steel "spade" hands. M. 45 mm. (20???), gilt brass, 32 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring repeating on four gongs with four hammers through activating slide in the band. Signed on the dial, the case punched with Ditisheim?s trade mark. Diam. 54 mm.

Harbor Scene Louis-Elysée Piguet, No. 5310 2877 47766, enamel attributed to P.-Amédée Champod, made for the Chinese market, circa 1890. 18K rose gold and enamel double-train, grande sonnerie clock watch with minute-repeating mechanism and center seconds.

C. Four-body, "bassine et filets", back cover painted on enamel with gold paillons, depicting boats against a sunset in a harbor and a lighthouse, band with red translucent and opalescent enamel over flinqué, bezels set with half pearls. D. White enamel, radial Roman numerals, outer minute track, gold "trèfle" hands set with ruby paste. M. 45 mm. (20???), gilt brass, 29 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance, Breguet balance spring. Signed on the pillar plate under the dial "L. Eée Piguet". Diam. 56 mm.

James C(asar) Pellaton, Dr. H.C., Le Locle, No. 1944, made specially for Georges Perrenoud in 1941. Very fine and very rare 18K gold, keyless one-minute tourbillon regulator in mahogany gimbaled box.

C. Three-body, "bassine et filets", glazed back, polished, set in two-body mahogany box with brass handles, brass enforced corners, lock in front, brass gimbaled ring with locking slot. D. White enamel, Breguet numerals, outer minute track, subsidiary sunk seconds, snap-on fit. Blued steel Breguet hands. M. 44.8 mm, rhodium-plated, Technicum locle caliber with curved center bridge, "fausses-côtes" decoration with narrow straps, three-arm Pellaton carriage with lateral calibrated lever escapement, cut anibal-steel Guillaume bimetallic compensation balance with special steel alloy balance spring with Phillips outer terminal curve, index regulator with gold scale plate, the pins with micrometric screw adjustment, jeweled to the center, entire escapement with endstones. Signed on dial, movement: "Fabriqué spécialement pour Georges Perrenoud. James C. Pellaton, Dr. H.C., Le Locle, 1941."

West Meets East Unsigned, Neuchâtel, Swiss, made on special order, circa 1870. Very fine and rare 18K gold and enamel diamond-set, hunting-cased, keyless minute-repeating watch.

C. Four-body, "bassine et filets", both covers elaborately set with diamonds; the front with a diamond-set American eagle among diamond-set stars, holding lighning bolts in its claws, with a red white and blue striped cartouche on its breast, diamond-set edge forming a scrolling pattern, the back centered with a diamond-set star and crescent surrounded with garlands of diamonds, diamond-set crown, gold hinged cuvette. D. White enamel, radial Roman numerals, outer minute track with five-minute Arabic markers, subsidiary sunk seconds. Gold "spade" hands. M. 43 mm. (19???), nickel, 31 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring, repeating on gongs through activating slide in the band. Punched with Neuchatel gold mark and casemakers mark "JAD". Diam. 52 mm.

Audemars Piguet, Genève, No. 46931. Pro-duced in 1943. Extremely fine and rare astronomic, 18K yellow gold gentleman's wristwatch with olive-shaped button chronograph, register, tachometer, triple date and moon phases. Accompanied by an 18K yellow gold Audemars Piguet buckle.

C. three-body, solid, polished, dedicated back, rounded bezel, teardrop lugs. D. matte silver with applied yellow gold Arabic numerals, auxiliary sunk dials for the 30-minute register and the months on the 3, for the seconds and the days of the week on the 9, for the days of the month on the 12, sector for the lunar calendar and aperture for the moon phases on the 6, outer tachometer graduation. "Bâton" yellow gold hands. M. 13 1/2''' rhodium-plated, "fausses côtes" decoration, 21 jewels, straight line lever escapement, monometallic balance adjusted to 8 positions, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 35 mm.

Audemars Piguet, Genève, No. 13530, retailed by Gübelin, Lucerne (Switzerland), circa 1950. Extremely fine and rare, minute-repeating, 18K yellow gold gentleman's wristwatch.

C. three-body, solid, polished, straight lugs. D. matte silver with applied gold indexes, auxiliary seconds dial. "Bâton" yellow gold hands. M. 12''', rhodium-plated, "fausses côtes" decoration, 29 jewels, straight line lever escapement, cut bimetallic balance adjusted to temperatures and 4 positions, Breguet balance-spring, repeating on gongs by means of a slide on the band. Dial, case and movement signed. Diam. 34 mm.

Lot of 35 documents, including: - Original drawing by Louis Cottier of the dial of a World Time clock (project for Patek Philippe), along with a photograph of the prototype. - 4 original black and white photos of an enamel World Time clock made by Louis Cottier; the original of which is in the Beyer Museum, Zurich. - 3 original drawings of World Time dials by Louis Cottier, dated 1945. - Original Patent by L. Cottier for movable dial, September 27, 1930. - Original Patent and Demande de brevet by L. Cottier for World Time systems, June 28, 1949. - Demande de brevet by L. Cottier for World Time systems, July 5, 1949. - Original Patent and Demande de brevet by L. Cottier for World Time systems, July 7, 1948. - Original Patent and Demande de brevet by L. Cottier for World Time systems, February 4, 1948. - 2 original drawings by L. Cottier. - 2 exceptional original drawings of a L. Cottier World Time clock (a very similar clock was sold by Antiquorum on April 13, 1997, lot 601) - Text explaining World Time movable dial. - Set of handwritten notecards by L. Cottier, keeping track of his patent submisssions. - Various documents, including articles on horological subjects.

Lot of 13 documents, including: - A 13-page list of the complete World Time production of Louis Cottier, for Patek Philippe, Rolex, Vacheron & Constantin, and other important firms. - A list of the books in L. Cottier?s personal library. - Manuscript documents by L. Cottier, concerning Genevan horology, including: 10 pages on caricature in horology; 32-page lecture on painters and Genevan horology; 13 pages on enameling and horology; important original drawings of clock and watch hands.

Lot of 5 documents, including: L. Cottier?s personal address book and three notebooks with original horological drawings by Louis Cottier.

Lot comprising: Important illustrated correspondence between L. Cottier and Hans Wilsdorf, founder of Rolex, concerning World Time projects among other things; illustrated project by L. Cottier for Rolex concerning means of adjus- ting waterproof watches without opening them among other things; project by L. Cottier for Rolex concerning improvement of Date- Just system.

Louis Cottier, Genève, No. 6, case No. 211933. Sold on December 12, 1932. Extremely rare and very fine 18K gold, key-less World Time dress watch with original in-voice and original photo.

C. Four-body, "bassine", polished, gold hinged cuvette. D. Matte, silvered, outer Arabic revolving chapter ring for 24 hours, World Time chapter ring bearing the name of 32 major cities around the world according to the Louis Cottier World Time Patent. Steel "Dauphine" hands. M. 36 mm. (17 1/2???), rhodium-plated, 18 jewels, straight line lever escapement, cut-bimetallic compensation balance with blued steel Breguet balance spring, punched with Seal of Geneva quality hallmarks. Signed on the movement. Diam. 44 mm.

Rolex, Genève, "World Time", No. 3917, case No. 579555, Ref. 4262 (Heures Universelles), made in 1947. Very fine and extremely rare 18K pink gold key-less dress watch.

C. Three-piece, massive, "variée", polished with matte back. D. Matte silvered with applied gold Roman numerals and indexes, outer Arabic dark and light revolving chapter ring for day and night hours and the world time chapter ring, bearing the name of 31 cities, regions and countries around the world according to the Louis Cottier World Time Patent. Gold hands. M. 36 mm. (16???), rhodium-plated, "fausses côtes" decoration, 18 jewels, straight line lever escapement, monometallic balance with screws, self-compensating Breguet balance spring. Signed on the dial, case and movement. Diam. 45 mm.

Agassiz, Swiss, "World Time", No. 4554021, circa 1945. Very fine and rare 14K gold keyless dress watch.

C. Three-piece, "variée", polished with matte back. D. Matte silvered with applied gold Roman numerals and indexes, outer Arabic dark and light revolving chapter ring for day and night hours and the World Time chapter ring, bearing the name of 31 cities, regions and countries around the world according to the Louis Cottier World Time Patent. Gold hands. M. 36 mm (16???), rhodium-plated, "fausses-côtes" decoration, 17 jewels, straight line lever escapement, cut bimetallic compensation balance with blued steel Breguet balance spring. Signed on the dial, case and movement. Diam. 45 mm.