Rolex 'Prince Brancard' Chronometer, Ref. 1491 HS. Production of this reference started in the 1930's.Fine and rare, jump hour, rectangular curved, 18K white and yellow gold gentleman's wristwatch.Accompanied by a yellow gold plated Rolex buckle.

C. two-body, flared, polished, bicolor, white gold stepped sides, yellow gold case. D. matte silver with paintedArabic numerals for the minutes, auxiliary seconds dial, aperture for the jump-hours with red Arabic numerals.'Moderne' blued steel hands. M. 7 1/2''', Observatory quality, rhodium plated, 17 jewels, lateral leverescapement, cut bimetallic balance adjusted to 6 positions, shock-absorber, Breguet balance-spring.Dial, case and movement signed.Dim. 25 x 42 mm.

Patek Philippe & Cie, Genève, No. 838110, case No. 640979. Produced in the 1930's.Very fine, rectangular curved, 18K pink gold gentleman's wristwatch. Accompanied by Extract of Archivesand box.

C. two-body, solid, polished and brushed, fluted lugs, 'bombé' crystal. D. matte silver with applied pink goldindexes and Arabic numerals, auxiliary seconds dial. 'Bâton' pink gold hands. M. Cal. 9'''-90 tonneau, rhodiumplated, 'fausses côtes' decoration, 18 jewels, lever escapement, cut bimetallic balance, Breguet balance-spring.,micrometer regulator.Dial, case, and movement signed.Dim. 22 x 39 mm.

Rolls 'Ato'. Produced in the 1930 's.Interesting self-winding, rectangular, solid silver gentleman's wristwatch.

C. two-body, solid, polished, hinged back, lapidated bezel, silver inner case. D. matte silver with applied goldBreguet numerals. 'Cathédrale' blued steel hands. M. 5 3/4?'', Hatot's patent, rectangular, rhodium plated,'fausses côtes' decoration, 15 jewels, lever escapement, cut bimetallic balance, 3 adjustments, Breguet balance-spring,the movement, mounted on balls, rolls back and forth and winds the watch.Dial and movement signed.Dim. 18 x 39 mm.

Leon Hatotwatchmaker, jeweler, goldsmith, inventor. Born at Châtillon sur Seine in 1883. Made movements for all the top Parisianfirms, including Van Cleef, Boucheron and Mauboussin. Made electric clocks under the name of ATO, invented the'Rolls' self-winding movement licensed to Blancpain, and took over the famous business of Paul Garnier. Hatot died in1953. At the outbreak of World War II, the firm closed its jewelry business, and the remaining stock was kept in a bankvault until sold at auction a few years ago.Hatot, Swiss, No. 102941, 1930's.Interesting self-winding, rectangular, 18K yellow gold gentleman's wristwatch.

C. two-body, solid, polished, hinged back, lapidated bezel, engraved band. D. matte silver with applied goldBreguet numerals. 'Moderne' blued steel hands. M. Cal. 5 3/4 ?'', signed Blancpain, Hatot's patent, rhodiumplated, 'fausses côtes' decoration, 15 jewels, lever escapement, cut bimetallic balance, Breguet balance-spring,the movement, mounted on ball bearings, rolls back and forth and winds the watch.Dial and movement signed, numbered on the case.Dim. 17 x 37 mm.

Rolex, Ref. 2737, 1930's.Extremely rare and very fine, stainless steel'Staybrite' gentleman's wristwatch witholive-shaped button chronograph, register,tachometer and telemeter.

C. three-body, polished and brushed, straightlugs. D. black, at 12 o'clock, the hour dial withpainted gold Arabic numerals, at 6 o'clock, the30 minute register dial, outer tachometergraduation, at the center, spiral telemetricscale. 'Lozenge' and 'Bâton' gold hands. M.13''', rhodium plated three-quarter platemovement, 17 jewels, lever escapement,monometallic balance, self-compensatingBreguet balance spring.Dial, case, and movement signed.Diam. 34 mm.

The separation of the hour indication andchronograph allows heightened clarity and easyreading of the information given by the watch,which is in exceptional condition.Omega, No. 9556747, circa 1933.Fine stainless steel 'Staybrite' gentleman'swristwatch with olive-shaped buttonchronograph, register, tachometer andtelemeter. Accompanied by a stainless steelOmega buckle.

C. three-body, polished, engraved back,lapidated straight lugs. D. black with paintedgold Arabic numerals, auxiliary seconds and 30minutes register dials, outer tachometergraduation, at the center, spiral telemetricscale. 'Bâton' yellow gold hands. M. Cal. 13''',rhodium plated, 17 jewels, lever escapement,cut bimetallic balance, Breguet balance spring.Dial, case, and movement signed.Diam. 38 mm.

Pierce 'Chronographe', Swiss, 1930's.Fine stainless steel gentleman's wristwatch with single button chronograph on the 4, register, tachometerand telemeter.

C. two-body, polished, stepped bezel, chronograph push-piece at 4 o'clock. D. black with radium-coated Arabicnumerals, auxiliary seconds and 60 minute register dials on the 6 and on the 12, outer tachometer graduation,concentric, graduation in 1/5th second, at the center, telemetric scale. 'Alpha' radium-coated skeleton hands.M. Cal. 13''', rhodium plated, 17 jewels, lever escapement, monometallic balance, self-compensating flat balancespring.Dial, case, and movement signed.Diam. 34 mm.

Patek Philippe & Cie, Genève, 'Calatrava', No. 952928, case No. 653605, Ref. 448. Production of thisreference started in the 1930's.Fine, small, stainless steel gentleman's wristwatch.

C. three-body, polished and brushed, flat bezel, concave lugs. D. matte silver with applied gold indexes and Arabicnumerals, auxiliary seconds dial. 'Feuille' steel hands. M. Cal. 10'''-200, rhodium plated, 'fausses côtes'decoration, 18 jewels, lever escapement, cut bimetallic balance, Breguet balance-spring, micrometer regulator.Dial, case and movement signed.Diam. 28 mm.

Rolex 'Anti Magnetic', Ref. 2507, 1930's.Very fine and rare 18K yellow gold gentleman's wristwatch with olive-shaped single button chronograph,register, tachometer and telemeter.

C. three-body, solid, polished, flat bezel, concave lugs. D. matte silver with applied gold Arabic numerals andindexes, auxiliary seconds and 30 minutes register dials, outer telemeter graduation, at the center, spiraltachometric scale. 'Feuille' yellow gold hands. M. 13''' rhodium plated, 17 jewels, lever escapement,monometallic balance, self-compensating Breguet balance spring.Dial, case, and movement signed.Diam. 32 mm.

Universal Genève, 'Compur'. Production of this model started circa 1936.Very fine small stainless steel 'Enversteel' gentleman's wristwatch with olive-shaped button chronograph,register, tachometer and telemeter.

C. three-body, brushed, flat bezel, concave lugs. D. matte silver with painted Arabic numerals and indexes,auxiliary seconds and 45 minute register dials, outer tachometer graduation in painted blue numerals,concentric, the telemeter graduation in painted red numerals, inner scale for the 1/5th of second. 'Bâton' bluedsteel hands. M. Cal. 12 1/2''', gilt brass, 17 jewels, lever escapement, monometallic balance, self-compensatingBreguet balance spring.Dial, case, and movement signed.Diam. 30 mm.

Rolex Oyster 'Centregraph' Chronomètre, Ref. 3462. Produced in the 1930's.Very rare water-resistant, center second, stainless steel gentleman's wristwatch with single round buttonchronograph.

C. two-body, polished and brushed, screw down case back and crown, reeded graduated bezel. D. matte silverwith painted Roman numerals and indexes. 'Bâton' blued steel hands. M. 10 1/2''' rhodium plated, 18 jewels,lever escapement, Superbalance balance adjusted to 6 positions, self-compensating Breguet balance spring, thesingle button on the 2 is for start-stop and return to zero functions of the chronograph.Dial, case, and movement signed. Diam. 29 mm.

Genova, 1998, p. 376.Rolex Oyster, Ref. 3492. Produced in the 1930's.Very fine center seconds, water-resistant, stainless steel lady's wristwatch.

C. two-body, polished, screw down case back and crown, curved straight lugs. D. black with radium-coated Arabicnumerals and indexes. 'Bâton' radium-coated 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.

Hermès 'Anti-magnétique' mono-ratrapante. Produced in the 1930's.Very rare and unusual, stainless steel gentleman's wristwatch with round and olive-shaped mono-ratrapantechronograph, register, tachometer and telemeter.

C. three-body, polished, hooded lugs bearing three extended grips each (one teardrop-shaped and two triangular)attached to the specific leather strap. D. matte silver with painted black Arabic numerals, auxiliary seconds and30 minute register dials, outer painted red tachometer graduation, concentric, painted blue telemeter graduationand painted black 1/5th second graduation. 'Feuille' blued steel hands. M. Cal. 13''' rhodium plated, 'faussescôtes' decoration, 17 jewels, lever escapement, monometallic balance, self-compensating Breguet balancespring. The round push-piece on the band is for start-stop and return to zero functions of the chronograph. Theround push-piece allows, to start, stop the chronograph, to fligh back and to block the chronograph. The olive-shapedpush-piece allows the mono-ratrapante functions.Signed on the dial. Diam. 35 mm.

Rolex Oyster Perpetual Chronomètre, Ref. 2940. Production started in the 1930's.Fine tonneau-shaped, center seconds, self-winding, water-resistant, stainless steel gentleman's wristwatch.

C. two-body, polished, screw down case back and crown. D. matte silver with radium-coated bâton indexes andArabic numerals. 'Skeleton' radium-coated 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. 32 mm.

Vacheron & Constantin, Genève, No. 414851, case No. 12782 by Verger Frères à Paris, circa 1930.Extremely rare and fine 'montre à volets', square, 18K white and yellow gold gentleman's wristwatch withconcealed dial by shutters, and two crowns. Accompanied by an 18K gold buckle. Accompanied bycertificate and box.

C. three-body, bicolor, solid, polished and brushed, hours in stylized Arabic numerals and triangular indexespainted on the white gold bezel, white gold lapidated lugs and case back, yellow gold band and shutters openingby the means of a crown at 9 o'clock. D. matte silver with painted indexes. 'Breguet' blued steel hands. M. 9'''rhodium plated, 15 jewels, lever escapement, cut bimetallic balance adjusted to 5 positions, Breguet balancespring.Signed on the movement, numbered and stamped on the case.Dim. 26 x 26 mm.

Cartier Paris, 'chronographe' entered in the Register on October 30, 1930.Very important and rare, 18K yellow gold gentleman's wristwatch with single button chronograph on thecrown and register. Accompanied by an 18K pink gold Cartier deployant clasp.

C. three-body, solid, polished, back with one screw, band with screws to fix the movement, gold screwed bars.D. matte silver with radium-coated Arabic numerals, auxiliary seconds and 30 minutes register dials. 'Skeleton'radium-coated hands. M. Cal. 13''', signed European Watch & Clock Co., rhodium plated, lever escapement, cutbimetallic balance, 3 adjustments, Breguet balance spring, the coaxial single button on the winding crown is forstart-stop and return to zero functions of the chronograph.Dial and movement signed, numbered on the case.Diam. 32 mm.

Cartier Paris, 'Bébé Guillotine, 4 pattes', entered in the Register in 1933.Extremely rare and fine Art Deco 18K yellow gold and black enamel gentleman's wristwatch with concealeddial. Accompanied by an 18K pink gold Cartier deployant clasp.

C. two-body, solid, polished, bezel with black enamel radial Roman numerals, when sides are pressed twoshutters open revealing the dial, black enamel and gold hooded lugs. D. matte silver with painted indexes.'Breguet' blued steel hands. M. 7 3/4''', signed European Watch & Clock Co., rhodium plated, 19 jewels, leverescapement, cut bimetallic balance, 8 adjustments, flat balance spring.Dial and movement signed, numbered on the case.Dim. 20 x 41 mm.

Cartier Paris, 'Chronograph Tortue' entered in the Register on September 2, 1938.Very rare and fine tortoise-shaped 18K yellow gold gentleman's wristwatch with single button chronographby the crown and register. Accompanied by an 18K pink gold Cartier deployant clasp.

C. two-body, shaped, solid, polished, dedicated back, screws on the band to fix the case back. D. matte silver withpainted radial Roman numerals, auxiliary seconds and 30 minutes register dials. 'Breguet' blued steel hands.M. Cal. 11''', signed European Watch & Clock Co., rhodium plated, 'fausses côtes' decoration, 25 jewels, leverescapement, cut bimetallic balance adjusted to temperatures and 2 positions, Breguet balance spring, thewinding crown is also for start-stop and return to zero functions of the chronograph.Dial and movement signed, numbered on the case.Dim. 27 x 35 mm.

Patek Philippe & Cie, Genève, No. 956866, case No. 668653, Ref. 482. Production of this reference startedin 1936.Very fine square 18K yellow gold and sapphire gentleman's wristwatch. Accompanied by Extract of theArchives.

C. two-body, solid, polished and brushed, bezel set with 12 baguette sapphires, hooded lugs with teardropattachments. D. matte silver with painted indexes. 'Bâton' yellow gold hands. M. Cal. 10'''-200, rhodium plated,'fausses côtes' decoration, 18 jewels, lever escapement, monometallic balance adjusted for heat, coldisochronism and 5 positions, self-compensating Breguet balance spring, micrometer regulator.Dial, case, and movement signed.Dim. 25 x 25 mm.

Patek Philippe & Cie, Genève, 'Reverso', No. 823421, case No. 609481, retailed by Gübelin Lucerne.Produced in circa 1934.Extremely fine and rare, rectangular, reversible, 18K white gold gentleman's wristwatch. Accompanied byExtract of the Archives.

C. three-body, solid, polished, reeded bezel, black champlevé enamel plate on the back bearing the initials 'D.B.'.D. black with applied white gold indexes, auxiliary seconds dial. 'Index' white gold hands. M. Cal. 9 ''' rhodiumplated, 'fausses côtes' decoration, 18 jewels, lever escapement, cut bimetallic balance adjusted to 8 positions, flatbalance-spring.Dial, case and movement signed.Dim. 23 x 37 mm.