C. Three-body, "demi-bassine", solid, polished with engine-turned case back à grains d'orge. Hinged gold cuvette. D. White enamel with bold Roman numerals, sunk subsidiary seconds. Pink gold "spade" hands. M. Cal. 22''', frosted gilt, 19 jewels, straight line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance-spring, "swan-neck" micrometer regulator.Dial, case and movement signed.Diam. 57 mm.
Grading System: AA
USD 2,500 - 3,500
EUR 2,000 - 2,800
Sold: USD 4,140
C. Four-body, "demi-bassine", solid, polished, hinged gold cuvette. D. Off-white with applied yellow gold Arabic numerals, outer dot minute divisions, subsidiary "guilloché" seconds dial. Yellow gold "Breguet" hands. M. Cal. 38 mm. (17'''), stamped with the Geneva Quality Hallmark, frosted gilt, straight line lever escapement "à moustache", cut bimetallic compensation balance, blued steel Breguet balance-spring.Dial, case and movement signed.Diam. 45 mm.
Grading System: AA
USD 2,300 - 3,300
EUR 1,800 - 2,700
Sold: USD 4,025
C. Four-body, "demi-bassine", solid, polished, case back with blue enamel monogram, hinged gold cuvette. D. Off-white with painted Breguet numerals, outer minute track, subsidiary seconds dial. Blued steel "spade" hands. M. Cal. 18''', rhodium plated, 19 jewels, straight line lever escapement, cut bimetallic compensation balance adjusted to 5 positions and isochronism, blued steel flat balance-spring.Dial, case and movement signed, movement also engraved "Grand Prix Paris 1900".Diam. 47 mm.
Grading System: A
USD 2,000 - 3,000
EUR 1,600 - 2,400
C. Three-body, "demi-bassine", solid, polished, case back with monogram. Hinged gold cuvette. D. White enamel with bold radial Breguet numerals, outer minute track, sunk subsidiary seconds dial. Pink gold "spade" hands. M. Cal. 17''', maillechort, 17 jewels, straight line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance-spring.Dial and movement signed.Diam. 45 mm.
Grading System: A
USD 2,000 - 3,000
EUR 1,600 - 2,400
Sold: USD 2,990
C. Three-body, polished and brushed, screwed-down case back and crown, graduated bi-directional revolving black bezel for the decompression times, "Triplock" winding-crown protected by the "Crown Guard", crystal with "cyclops" lens. D. Black with tritium coated round, triangular and bâton indexes, aperture for the date. Tritium coated steel "skeleton" hands. M. Cal. 1570, rhodium plated, "oeil-de-perdrix" decoration, 26 jewels, straight line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock-absorber, self-compensating free-sprung Breguet balance-spring, Microstella regulating screws, hack mechanism.Dial, case and movement signed.Diam. 40 mm.
Grading System: AA
USD 2,500 - 3,500
EUR 2,000 - 2,800
C. Three-body, polished and brushed, screwed-down case back and crown, helium escape valve at 9, graduated bi-directional revolving black bezel for the decompression times, "Triplock" winding-crown protected by the "Crown Guard". D. Black with tritium coated round, triangular and bâton indexes, aperture for the date. Tritium coated steel "skeleton" hands. M. Cal. 1570, rhodium plated, "oeil-de-perdrix" decoration, 26 jewels, straight line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock-absorber, self-compensating free-sprung Breguet balance-spring, Microstella regulating screws, hack mechanism.Dial, case and movement signed.Diam. 40 mm.
Grading System: AA
USD 4,000 - 6,000
EUR 3,200 - 5,000
C. Three-body, polished and brushed, screwed-down case back and crown, graduated bi-directional revolving black bezel for the decompression times, "Triplock" winding-crown protected by the "Crown Guard".D. Black with tritium coated round, triangular and bâton indexes. Tritium coated "skeleton" hands.M. Cal. 1570, rhodium plated, 26 jewels, straight line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock-absorber, self-compensating free-sprung Breguet balance-spring, Microstella regulating screws.Dial, case and movement signed.Diam. 40 mm.
Grading System: AA
USD 2,800 - 3,800
EUR 2,300 - 3,000
C. Three-body, polished and brushed, screwed-down case back and crown, graduated bi-directional revolving black bezel for the decompression times, "Twinlock" winding-crown protected by the "Crown Guard".D. Black with tritium coated round, triangular and bâton indexes. Tritium coated "skeleton" hands. M. Cal. 1520, rhodium plated, 26 jewels, straight line lever escapement, monometallic balance, shock-absorber, self-compensating flat balance-spring.Dial, case and movement signed.Diam. 40 mm.
Grading System: A
USD 2,200 - 3,200
EUR 1,800 - 2,600
Sold: USD 2,530
C. Three-body, polished and brushed, screwed-down case back and crown, graduated bi-directional revolving bezel in Arabic numerals for the decompression times. D. Black with tritium coated bâton, triangular and round indexes. Tritium coated "skeleton" hands. M. Cal. 1030, rhodium plated, 25 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. 38 mm.
Grading System: AAA
USD 5,000 - 7,000
EUR 4,000 - 5,500
Sold: USD 6,670
C. Three-body, polished and brushed, screwed-down case back and crown, red and black graduated bi-directional revolving bezel for the second time-zone in 24 hours, crystal with "cyclops" lens. D. Black with radium coated round, triangular and bâton indexes, aperture for the date. Radium coated "skeleton" hands. M. Cal. 1030, rhodium plated, 25 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. 39 mm.
Grading System: AA
USD 5,000 - 7,000
EUR 4,000 - 5,500
Sold: USD 6,440
C. Three-body, polished and brushed, screwed-down case back and crown, graduated bi-directional revolving bezel in Arabic numerals for the decompression times. D. Black with radium coated bâton, triangular and round indexes. Radium coated "skeleton" hands. M. Cal. 1030, rhodium plated, 25 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. 38 mm.
Grading System: AAA
USD 7,500 - 9,500
EUR 6,000 - 7,700
Grading System: AA
USD 3,000 - 5,000
EUR 2,400 - 4,000
Sold: USD 4,600
C. Three-body, solid, polished and brushed, screwed-down case back, buttons and crown, tachometer graduation on the gold bezel to 200 units per hour. D. Bicolored black and champagne with applied gold tritium coated indexes, subsidiary "guilloché" dials for the seconds, the 12-hour and 30-minute registers. Tritium coated gold "bâton" hands. M. Cal. 727, rhodium plated, 17 jewels, straight line lever escapement, monometallic balance adjusted to 3 positions, shock-absorber, self-compensating Breguet balance-spring, Microstella regulating screws.Dial, case and movement signed.Diam. 37 mm.
Grading System: AAA
USD 30,000 - 40,000
EUR 24,000 - 32,000
Sold: USD 29,900
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. Bicolored champagne and black with applied gold tritium coated indexes, subsidiary "guilloché" dials for the seconds, the 12-hour and 30-minute registers. Tritium coated gold "bâton" hands. M. Cal. 727, rhodium plated, 17 jewels, straight line lever escapement, monometallic balance adjusted to 3 positions, shock-absorber, self-compensating Breguet balance-spring, Microstella regulating screws.Dial, case and movement signed.Diam. 37 mm.
Grading System: AAA
USD 25,000 - 30,000
EUR 20,000 - 24,000
Sold: USD 27,600
C. Three-body, solid, polished and brushed, screwed-down case back and crown, crystal with "cyclops" lens. D. Satiné silver set with 8 round and 2 baguette diamond indexes, apertures for the days of the week and the date. Tritium coated white gold "bâton" hands. M. Cal. 1055, rhodium plated, "oeil-de-perdrix" decoration, 25 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. 36 mm.
Grading System: AAA
USD 20,000 - 25,000
EUR 16,000 - 20,000
C. Three-body, solid, polished and brushed, flat bezel, concave lugs. D. Matte silver with applied white gold bâton indexes. White gold "dauphine" hands. M. Cal. 27-SC, stamped with the Geneva Quality Hallmark, rhodium plated, "fausses côtes" decoration, 18 jewels, straight line lever escapement, monometallic balance adjusted to heat, cold, isochronism and 5 positions, shock-absorber, self-compensating Breguet balance-spring, micrometer regulator.Dial, case and movement signed.Diam. 35 mm.
Grading System: AAA
USD 25,000 - 30,000
EUR 20,000 - 24,000
Sold: USD 25,300
C. Two-body, solid, polished, screwed-down dedicated case back, rounded bezel, concave lugs. D. Off-white enamel with applied faceted pink gold indexes, subsidiary seconds dial. Pink gold "dauphine" hands. M. Cal. 12'''-600 AT, stamped with the Geneva Quality Hallmark, rhodium plated, "fausses côtes" decoration, 30 jewels, straight line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock-absorber, self-compensating free-sprung Breguet balance-spring, micrometer regulator, 18K gold rotor.Dial, case and movement signed.Diam. 35 mm.For a note on ref. 2526, see lot 138.
Grading System: AAA
USD 60,000 - 80,000
EUR 50,000 - 65,000
Sold: USD 57,500
C. Two-body, solid, polished and brushed, screwed-down case back, stepped bezel, lapidated curved and straight lugs.D. Satiné silver with 10 round and 1 baguette diamond-set indexes, subsidiary seconds dial, aperture for the date. White gold "dauphine" hands. M. Cal. 27-460 M, stamped with the Geneva Quality Hallmark, rhodium plated, "fausses côtes" decoration, 37 jewels, straight line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock-absorber, self-compensating free-sprung Breguet balance-spring, 18K yellow gold rotor.Dial, case and movement signed.Diam. 35 mm.
Grading System: AA
USD 17,000 - 22,000
EUR 14,000 - 18,000
Sold: USD 20,700
C. Three-body, solid, polished and brushed, triangular lugs, domed sapphire crystal. D. Matte silvered gold with appliedyellow gold bâton indexes, subsidiary seconds dial with graduation for the days of the month, apertures for the days of the week, the months, the leap year and the moon phases. Yellow gold "dauphine" hands. M. Cal. 27-460 Q, stamped with the Geneva Quality Hallmark, rhodium plated, "fausses côtes"decoration, 37 jewels, straight line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock-absorber, self-compensating free-sprung Breguet balance-spring, 18K gold rotor.Dial, case and movement signed.Diam. 37 mm.
Grading System: 
USD 100,000 - 150,000
EUR 80,000 - 120,000
C. Two-body, solid, polished, screwed-down transparent case back, concave lugs, sapphire crystals. D. Matte silver with applied yellow gold and luminous Roman numerals, subsidiary dials for the month, the days of the week and the 24 hours, aperture for the date. Luminous yellow gold "feuille" hands. M. Cal. 315/198, 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, 21K gold rotor. Dial and movement signed.Diam. 37 mm.
Grading System: AAA
USD 9,000 - 11,000
EUR 7,000 - 9,000
Sold: USD 13,800