E. Senn, Bâle, Swiss, circa 1900.Fine 18K gold, hunting-cased, astronomical, with phases of the moon, minute repeating watch with calendar and chronograph.

C. Four-body, "bassine", polished with 'EW' monogram in front, gold hinged cuvette. D. White enamel dial, Arabic numerals, outer chronograph chapter, three subsidiary dials for days of the week, days of the month and seconds concentric with aperture for the phases of the moon, aperture at 12 o?clock for digital months, gold "spade" hands. M. 19 ???, rhodiumed, 'fausses côtes' decoration, straight-line lever escapement, cut bimetallic compensation balance, blued-steel Breguet balance spring, gointrain jeweled to the third wheel with balance and escape wheel in endstones, repeating and chronograph trains fully jeweled, repeating on gongs through activating the slide in the band.Signed on cuvette.Diam. 55 mm.

David Mayer, Hartford, Connecticut, Swiss, circa 1890.Fine 14K gold one-minute repeating watch with a chronograph.

C. Four-body, 'bassine et filets', polished, gold hinged cuvette with border in fine engine-turning. D. White enamel, Breguet numerals, subsidiary sunk seconds, blued-steel 'spade' hands. M. 19???, nickel, 'fausses côtes' decoration, straight-line lever escapement, cut bimetallic compensation balance, blued-steel Breguet balance spring, all three trains fully jeweled, wolf-teeth winding wheels, pin-set, repeating on gongs through activating the slide in the band.Signed on the cuvette.Diam. 53 mm.

R. Laurin, Bâle, Swiss, circa 1900.Fine 18K gold keyless watch with chronograph and 30-minute register.

C. Four-body, 'bassine', polished, centered by the monogram 'EW', gold hinged cuvette. D. White enamel dial, Arabic numerals, subsidiary sunk seconds, subsidiary sunk 30-minute register, gold "spade" hands. M. 19???, gilded, straight-line lever escapement, cut bimetallic compensation balance with gold temperature screws, blued-steel Breguet balance spring, wolf-teeth winding wheels, chronograph on the back plate.Signed on the cuvette.Diam. 50 mm.

A. Haas & Colin, fabricants, 141 Bd. Sébastopol, Paris, No. 36247, Swiss, circa 1878.Fine 18K gold, hunting-cased, keyless, quarter repeating moon-phase astronomical watch with triple calendar.

C. Four-body, massive, 'bassine et filets', the engine-turned cover with the engraved monogram 'PM'. Gold cuvette with engine-turned border and engraved with the date Junio 29 de 1878. D. White enamel with Roman numerals, outer Arabic minute ring, sunk subsidiary seconds with inner moon-phase aperture, subsidiary dials for the days of the week, the date and small aperture for the months. Blued-steel 'fleur de lys' hands. M. Glazed 19???, nickel-plated, 'fausses côtes' decoration, 29 jewels, counerpoised adjustable straight-line lever escapement, cut bimetallic balance, Breguet balance spring. Repeating on gongs with slide in the band.Signed on the cuvette.Diam. 53 mm.

Swiss, retailed in Germany, circa 1890.Fine 18K gold, hunting-cased, keyless, minute repeating watch with split-seconds chronograph.

C. Four-body, massive, 'bassine'. The back cover finely engraved with a hunting scene, the front cover monogrammed, gold hinged cuvette and gold glazed bezel over the movement. D. White enamel with Roman numerals, outer Arabic minute and chronograph rings, sunk subsidiary seconds, blued-steel 'Spade' hands.M. 20???, nickel, 'fausses côtes' decoration, the going, repeating, and chronograph trains fully jeweled, straight-line lever escapement, cut bimetallic balance, blued-steel Breguet balance spring with index regulator, repeating on gongs through activating the slide in the band. Chronograph on the back with split-seconds mechanism under the dial, chronograph activated by pushing the winding crown, split-seconds activated by a push-piece in the band, lever-set. The insides of the covers stamped wth Swiss Assay 18K gold marks from Le Locle, number '19846', casemaker?s mark and German Assay guarantee stamp.Diam. 59 mm.

Swiss, retailed by Chs. J. Gaupp & Co, Hong Kong, No. 2498, circa 1890.Fine, 18K rose gold hunting-cased keyless, minute repeating watch.

C. Four-body, polished, gold hinged cuvette. D. White enamel, Roman numerals, Arabic outer minutes, snap-on fit, 'fleur-de-lys' hands. M. 19??? matte-gilded brass, straight-line calibrated lever escapement, bimetallic compensation balance, Breguet balance spring, the going train jeweled to the center wheel, the entire escapement with end-stones, the repeating train jeweled to the hammers, wolf-teeth winding gears, pin-set, the repeater with all-or-nothing feature activated by a slide on the bandSigned by the retailer on the dial and the cuvette, casemaker?s stamp 'DB' in an oval inside back cover, the cuvette engraved with 'Demi chronometer, Répétition à minute'.

Jules Jürgensen, Copenhagen, Swiss, No. 15627, circa 1895.Fine 18K gold keyless, minute repeating watch.

C. Four-body, massive, 'bassine et filets', polished, the back cover with applied enameled monogram, gold hinged cuvette decorated with engine-turned circular strap.D. White enamel snap-on with Roman numerals, outer minute ring and sunk subsidiary seconds. Gold 'Louis XV' hands. M. 17???, nickel plated, 31 jewels, the center and the repeater mainspring arbor jewels in gold settings, straight-line lever escapement, cut bimetallic balance, Breguet balance spring. Repeating on gongs with slide in the band. Jules Jürgensen?s patented hand-setting mechanism by means of the folding bow patented on 15 January 1867.Signed on the dial, case, and movement, back cover stamped inside with Jules Jürgensen hallmark.Diam. 57 mm.

Rolex Oyster Perpetual "Day Date", Superlative Chronometer Officially Certified, Ref. 6611, 1950's.Fine tonneau shaped, center-seconds, self-winding, water-resistant, 18K yellow gold gentleman's wristwatch with day and date. Accompanied by an 18K gold Oyster bracelet.

C. three-body, solid, polished and brushed, screwed case back and crown, reeded bezel. D. champagne with applied gold faceted bâton indexes, aperture for the day and the date. "Alpha" radium-coated yellow gold hands. M. Cal. 1555, rhodium-plated, 25 jewels, lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock-absorber, self-compensating Breguet balance-spring.Dial, case, and movement signed.Diam. 36 mm.

Rolex Oyster Perpetual, "Turn-O-Graph", Officially Certified Chronometer, Ref. 6202, circa 1953.Fine center-seconds, self-winding, water-resistant, tonneau shaped, stainless steel and yellow gold gentleman's wristwatch, with gold bezel. Accompanied by a stainless steel and yellow gold Oyster bracelet.

C. three-body, polished and brushed, screwed case back and crown, yellow gold graduated revolving bezel with the arrow showing the zero point and gold winding-crown, steel case. D. "guilloché" matte silver with yellow gold faceted bâton indexes. "Dauphine" yellow gold hands. M. Cal. 9 3/4''' rhodium-plated, 'fausses côtes' decoration, 19 jewels, lever escapement, monometallic balance, self-compensating Breguet balance-spring.Dial, case, and movement signed.Diam. 35 mm.

Rolex "Precision", Ref. 5002, 1950's.Fine self-winding, water-resistant, tonneau-shaped, 18K yellow gold lady's wristwatch with 18K yellow gold Oyster bracelet.

C. two-body, solid, polished, screwed case back and crown. D. matte silver with applied gold indexes and Arabic numerals, auxiliary seconds dial. "Dauphine" gold hands. M. 9 3/4''' rhodium-plated, 19 jewels, lever escapement, monometallic balance, self-compensating Breguet balance-spring.Dial, case, and movement signed.Diam. 24 mm.

Rolex Oyster "Précision", Ref. 5005, 1950's.Fine tonneau shaped, center-seconds, water-resistant, 18K yellow gold lady's wristwatch. Accompanied by an 18K yellow gold Oyster bracelet.

C. two body, solid, polished and brushed, screw-down case back and crown, "guilloché" bezel with indexes.D. champagne with applied yellow gold indexes. "Dauphine" yellow gold hands. M. Cal. 9 ''' rhodium-plated, 17 jewels, lever escapement, Superbalance balance, 2 adjustments, self-compensating Breguet balance-spring.Dial, case and movement signed.Diam. 24 mm.

Rolex Oyster Perpetual, Ref. 4486, 1950's.Fine tonneau shaped, self-winding, water-resistant, 18K pink gold lady's wristwatch. Accompanied by a pink gold-plated Rolex buckle.

C. two-body, solid, polished, screw-down case back and crown. D. black with applied pink gold radium-coated triangular indexes, auxiliary seconds dial. "Dauphine" radium-coated pink gold hands. M. Cal. 9 3/4''' rhodium-plated, 19 jewels, lever escapement, monometallic balance, self-compensating Breguet balance-spring.Dial, case, and movement signed.Diam. 24 mm.

Rolex Chronographe "Anti-Magnétique", Ref. 4768, 1950's.Fine stainless steel and pink gold gentleman's wristwatch with square button chronograph, registers, tachometer and triple date.

C. three-body, bicolor, polished and brushed, teardrop fluted lugs, pink gold bezel and winding-crown, steel case. D. matte silver with inlaid square indexes and Arabic numerals, auxiliary "guilloché" dials for the seconds, the 12 hours and 30 minutes registers, outer graduation for the days of the month, concentric for the tachometer, apertures for the days of the week and the months. "Bâton" pink gold hands. M. 13''' rhodium-plated, 17 jewels, lever escapement, monometallic balance, shock-absober, self-compensating Breguet balance-spring.Dial, case, and movement signed.Diam. 35 mm.

Rolex Oyster Perpetual, Officially Certified Chronometer, Ref. 6074, circa 1950.Fine water-resistant, center-seconds, self-winding, 18K pink gold gentleman's wristwatch with date. Accompanied by a pink gold-plated Rolex buckle.

C. two-body, solid, polished and brushed, screw-down case back. D. black with applied pink gold radium-coated triangular indexes, aperture for the date. "Alpha" radium-coated pink gold hands. M. 10 1/2''' rhodium-plated, 'fausses côtes' decoration, 18 jewels, lever escapement, monometallic balance, self-compensating Breguet balance-spring.Dial, case, and movement signed.Diam. 35 mm.Accompanied by a Bulletin des Bureaux Officiels de Contrôle de la Marche des Montres from Biel, dated June 17, 1950, and by a certificate.

Rolex Oyster Perpetual Officially Certified Chronometer, Ref. 6031, 1950's.Very rare center-seconds, self-winding, water-resistant, tonneau shaped, pink gold and stainless steel gentleman's wristwatch. Accompanied by a stainless steel Rolex buckle.

C. two-body, bicolor, polished and brushed, pink gold reeded graduated bezel and crown, steel screwed case back. D. matte silver with applied pink gold tritium-coated triangular indexes, aperture for the date. "Dauphine" tritium-coated pink gold hands. M. 10 1/2''' rhodium-plated, 19 jewels, lever escapement, monometallic balance, self-compensating Breguet balance-spring.Dial, case, and movement signed.Diam. 35 mm.

Rolex Oyster Perpetual Officially Certified Chronometer, Ref. 6567, 1950's.Fine center-seconds, self-winding, water-resistant, tonneau-shaped, 18K pink gold gentleman's wristwatch with 18K pink gold Oyster bracelet.

C. three-body, solid, polished and brushed, screwed case back and crown, reeded bezel. D. black with applied gold fancy indexes. "Dauphine" radium-coated pink gold hands. M. Cal. 1030, rhodium-plated, 'fausses côtes' decoration, 25 jewels, lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock-absorber, self-compensating flat balance-spring.Dial, case, and movement signed.Diam. 34 mm.

Rolex, Genève, Ref. 2025, circa 1980.Fine 18K pink gold flexible bracelet with watch.

C. Flexible wire bracelet with conical end-piece divided into triangular segments. D. Black, applied gold indexes, gold 'index' hands. M. 6???, cal 1400, rhodiumed, straight-line lever escapement, monometallic balance, self-compensating flat balance spring, 18 jewels, Incablock antishock device on balance and escape wheel.Signed on the dial and the movement.Dim. of watch: 19x21mm.

Rolex, 'Precision' Genève, circa 1980.Fine platinum keyless ring watch with concealed winding crown.

C. Two-body, polished, finger-loop with two spring-loaded prongs set with three diamonds each, forming the Rolex crown. D. Matte silvered, raised white markers, 'losange' hands. M. 6???, rhodiumed, straight-line lever escapement, monometallic balance, self-compensating flat balance spring, 17 jewels, Incablock antishock device on balance and escape wheel.Diam. 15 mm.

Rolex, "Gouvernail à 12 Points d'Or", retailed by Sterlé, Paris, 1960's.Fine and unusual helm-shaped, 18K yellow gold lady's wristwatch.

C. two-body, polished, stepped bezel, inner ring with 12 gold dots, "Vendôme" type lugs. D. matte silver with applied yellow gold indexes. "Alpha" yellow gold hands. M. Cal. 1400, 6 1/4''', rhodium plated, 18 jewels, lever escapement, monometallic balance, shock-absorber, self-compensating flat balance-spring.Dial and movement signed.Diam. 26 mm.

Rolex, "Gouvernail", retailed by Sterlé, Paris, 1960's.Fine and unusual helm-shaped platinum lady's wristwatch.

C. two-body, polished, hammered outer ring, inner ring with 4 platinum dots, "Vendôme" type lugs. D. matte silver with applied white gold indexes. "Bâton" white gold hands. M. 6 1/4 ''' , rhodium plated, 17 jewels, lever escapement, monometallic balance, shock-absorber, self-compensating flat balance-spring.Dial and movement signed.Diam. 26 mm.