Lot of 2 Breguet documents:

C. Three-page note about Watch No. 2669. Drawings of a "resonance" watch mechanism with two separate movements made for King George IV.

Lot of 12 Breguet documents

C. Horlogerie, an important document written by Breguet himself (lower edge torn), illustrated on page 138 of Professor Engel's book.Letter to Breguet from his cousin Ch. Frederick Giroud. Promissory note for 600 francs from Piguet Frères to Breguet, dated May 29, 1803, illustrated on page 185 of Professor Engel's book. Letter to Prince Menchikoff, regarding one of his watches, probably No. 5040. Letter to Breguet from his Bordeaux agent Ducom, dated 1827. 7 other letters and documents about friction in escapements and necessity of having the balance amplitude constant. Important letter from Breguet about fake Breguet watches.- Breguet writes, among other things, about compensation balance, mentioning, a long-suspected fact, that he used a special alloy instead of brass.

Breguet documents

C. Drawing of the house of Breguet and three manuscript documents.

Lot of 4 Breguet documents: Framed Letter from Breguet Neveu & Cie to Winnerl, dated August 12, 1835, about the sale price of chronometers.

C. Drawings of the calendar work of a repeating watch with jumping hour hand and calendar (illustrated on page 180 of Professor Engel's books. Framed drawing of a watch with equation of time and calendar, illustrated on page 182 of Professor Engel's book. Drawing of equation of time with description.

Breguet, No. 257, sold to Monsieur Julliot on Prairial an 6 (May/June 1798) for 600 francs.Fine silver and gold early montre de souscription, accompanied by Breguet certificate.

C. Three body, "forme collier", by Gustave Mermillod (Master mark), No. 237, engine-turned back and band, gold polished bezels, hinges, pendant and bow. D. White enamel souscription type, signed on the reverse by S. Cave, Pl. Thionville, Breguet numerals and five-minute divisions, secret signature below 12 o'clock. Blued steel souscription hand with tapered point. M. 55,7 mm, (23'''), gilt brass, three-quarter plate with crescent for balance, early souscription caliber with central going barrel,overhanging ruby cylinder escapement, plain brass three-arm jeweled balance, pare-chute suspension and bimetallic compensation curb, four-wheel train, winding only from the front.Signed on the dial and movement.Diam. 61 mm.

Breguet, No. 482, sold to Monsieur Viguegnare de Rouen le 23 germinal an 7 (April 12, 1799) for 600 francs.Fine silver and gold and silver "montre de souscription", accompanied by Breguet certificate.

C. Three body, "forme collier", gold with silver band, made by Gustave Mermillod (Master mark), engine-turned back and band, loose ring. D. White enamel souscription type, signed on the reverse by Borel, Breguet numerals and five-minute divisions, secret signature below 12 o'clock. Blued steel souscription hand with tapered point.M. 55,9 mm (23'''), gilt brass, "souscription" center hanging barrel caliber, overhanging ruby cylinder escapement, plain brass three-arm jeweled balance, pare-chute suspension and bimetallic compensation curb, four-wheel train, winding only from the front.Signed on the dial and movement.Diam. 61 mm.

Breguet, No 164, "montre perpe-tuelle", sold on 24 Ventose An 4 (March 13, 1796) to Monsieur Legras, ami de Rougemont.Very important and rare, 18K gold, astronomical quarter-repeating self-winding perpetuelle with 60-hour power reserve, date, phases and age of the moon, with short gold chain and Breguet key, accompanied by a Breguet certificate and original Desoutter morocco fitted box.

C. Two-body, collar form, whole engine-turned in "à grains d'orge" pattern with polished circle on the back cover, locking steel lever at the pendant. D. Silver, radial Roman numerals, outer minute dot divisions, sunk subsidiary seconds, up-and-down indicator at X o'clock, symmetrically to the right aperture for the phases of the moon with a sector for its age on the edge, date aperture above VI o'clock. Mounted to gilt brass à bate levée ring. Blued steel Breguet hands. M. 47,20 mm (21'''), gilbrass three-quarter plate, two going barrels, tandem winding with wolf-tooth winding gears, five-wheel train, straight-line lever escapement, four-arm (two short, two long) steel and platinum jeweled and capped compensation balance with two screwed quarter-turn lamina segments terminated with a threaded pin at the free end for platinum temperature nuts, four platinum mean time screws, of which two pass through a hole at the free end of each segment securing it laterally, blued steel helical balnce spring with both terminal curves, lift on the pallets, no draw, no oil retention slots, single trapezoidal roller table with inserted trapezoidal jewel working between two upright steel pins mounted at the end of the fork, long fork with banking over the escape wheel arbor with U-shaped end, early-form pare-chute on both pivots. Ogival platinum weight swinging between two spring-loaded ruby rollers mounted to the case with a stop mechanism triggered when fully wound, Breguet-type repeating mchanism with all-or-nothing and fixed star wheel, repeating with a single hammer on a short gong fixed to the case by depressing the pendant, tone adjustment screw in the "à bate levée" ring.Signed "Breguet" with the serial number on the dial ring and on the dial.Diam. 55 mm.

Breguet, No. 1470, sold to Monsieur André Becker on 1 germinal an 13 (March 22, 1805) for 864 francs.Very fine 20K gold montre de souscription, in original morocco fitted box, accompanied by a Breguet certificate.

C. Three-body, "forme collier", engine-turned with polished center, fluted band, made by Joly (Master mark),No. 1002. D. White enamel "souscription" type, signed on the reverse by Borel, No. 74, Breguet numeralsand five-minute divisions, secret signature below XII o'clock. Blued steel souscription hand with tapered point.M. 56,9 mm (23'''), gilt brass, "souscription" center hanging barrel caliber, overhanging ruby cylinder escapement, gilt brass three-arm jeweled balance, pare-chute suspension and bimetallic compensation curb, four-wheel train, winding from both sides.Signed on the dial and movement.Diam. 61 mm.

Breguet No. 4284, sold to Comte de Villontroys on November 13, 1824, for 1,800 francs.Very fine and rare, small and slim 20K gold hunting-cased souscription type watch with regulator through the dial.

C. Outer: two-body, hinged, "forme quatre baguettes", polished, front and back engine-turned, by Tavernier, No. 4009. Inner: three-body, "forme quatre baguettes", engine-turned back and band, reeded bezels, back with two apertures for winding and regulating. D. Silver, radial Roman hour chapter on polished ring, outer five-minute dot divisions, engine-turned center with regulating aperture, stamped on reverse by Tavernier. Blued steel "souscription" hand with tapered point. M. 31,8 mm (14'''), cntral hanging barrel, ruby cylinder escapement, three-arm gold balance with blued steel flat balance spring, pare-chute on the top pivot, escapement jeweled, five-wheel train, female winding.Signed on the dial, movement stamped with serial number, case stamped with watch and case serial numbers, casemaker's' mark and French gold marks.Diam. 42 mm.

Breguet, No. 2791, "Montre Médaillon à quantième", sold on October 12, 1818, to Duc de Berwick for 4,800 francs, returned to Breguet 20 years later and immediately sold to Anthony de Rothschild.Very fine and rare 20K gold small "convertible" watch with eccentric dial, date and regulator set on the dial built on the principles of the "Garde Temps", with a short gold chain and Breguet key, in later Breguet morocco fitted box.

C. Outer: two-body, "forme quatre baguettes", spring-loaded and engine-turned, inner: three-body, also "forme quatre baguettes" engine-turned with winding aperture in the back, band with three push-pieces for adjusting the date and regulator. Both cases made by Tavernier, No. 3483. D. Silver, eccentric, made by Tavernier, No. 791, set in the lower part, Roman numerals in polished round cartouches, outer minute dot divisions, center in "basket" pattern engine turning, date aperture below XII o'clck with small applied gold arrow indicating the center, regulating aperture at I o'clock. Gold Breguet hands. M. 29,6 mm (11 1/2'''), gilt brass, hanging barrel, straight-line calibrated lever escapement with draw, brass escape wheel with very fine oil retention holes, three-arm cut-bimetallic compensation balance with steel/platinum lamina, three gold mean screws, six platinum temperature screws, double roller with gold "arrow" dart, blued steel flat balance spring, entire train jeweled, the esapement also capped, pare-chute suspension on both pivots, female winding.Signed on dial and movement, case numbered.Diam. 36 mm.

Breguet No. 2292, "Montre a Médaillon", sold on October 28, 1890 to Monsieur Labouchère of Amsterdam for 1,500 francs.Very fine and rare 18K gold and enamel, pearl-set montre à tact with short gold chain and Breguet key, accompanied by a Breguet certificate and original morocco fitted box.

C. By Tavernier, No. 2827. Three-body, "forme quatre baguettes", both covers with translucent pale gray enamel over "sunburst" engine-turning, gold paillon borders, front with small aperture for the dial, back with gold arrow flush with the enamel, pointing to a small knob, band with the same enamel decorated with gold paillon laurel-leaf wreath, twelve pearl touch pieces, detachable cuvette with apertures for winding, setting, regulating and the dial, with two small secret signatures, pendant st with two half-pearls, loose ring, short gold chain with gold Breguet key. D. Silver, small, eccentric set in the front cover aperture, Roman numerals, outer minute dot divisions, engine turned center with "basket" pattern. Blued steel "Baton" hands. M. 34.7 mm, gilt brass, "souscription" caliber with central barrel and five-wheel train, ruby cylinder escapement, plain three-arm brass balance, blued steel flat balance spring, pare-chute on the top pivot.Signed on the cuvette, case numbered.Diam. 41 mm.

Breguet No. 1177, sold on 29 Thermidor, an 1805, to Monsieur X (probably M. de Haute-Roche, to whom the watch belonged in 1824) for 1600 Francs.Very fine 20K gold, dumb quarter repeating watch with jumping hour hand, accompanied by a certificate.

C. Four-body, "forme collier", by Gros, No. 278, engine-turned with fluted band and loose ring pendant, the back centered with a small monogram, hinged gold cuvette. D. White enamel by Vincent, Breguet numerals, outer minute divisions, secret signature under 12 o'clock. Blued steel Breguet hands. M. 50,5 mm (21'''), gilt brass, new caliber with hanging barrel and Maltese Cross stop work, jeweled to the center, overhanging ruby cylinder escapement, plain gold three-arm balance with pare-chute susension, blued steel flat balance spring with bimetallic compensation curb. Repeating with a massive polished steel hammer on a bloc on the case.Signed on the dial, cuvette and movement.Diam. 56 mm.

Breguet et Fils, No. 1320, shipped to LeRoy, Constantinople for Monsieur Esseyd Ali Effendi, Sultan Beykan on 13 fructidor an 12 (August 31, 1804), for 1,872 francs.Very fine and rare, early 20K gold and enamel pair-cased dumb quarter repeating watch, made for the Islamic market. Accompanied by the Breguet certificate No. 3230 dated June 29, 1907.

C. By Tavernier. Outer: two-body, the back in red translucent champlevé enamel over "sunburst" engine-turning, with gold paillon work around the border, gold paillon rosette in the center, bezels in opaque azure enamel alternating with gold and pink enamel shell pattern. Inner: four-body, polished with reeded band, gold hinged cuvette with winding aperture. D. By Borel, white enamel with radial Turkish numerals, outer minute divi-sions, secret signature below 12 o'clock, secured by a screw above 6 o'clock, signed "Borel 217" on the reverse. M. 40,64 mm (18'''), gilt brass, standing barrel with Breguet continuous stop work, ruby cylinder escapement with three-arm brass jeweled balance, blued steel flat balance spring, pare-chute on the top pivot, dumb repeating on two hammers by depressing the pendant.Signed on the dial, cuvette, both cases repeated with the number.Diam. 53 mm.

Breguet et Fils, Horloger de la Marine Royale, No. 3872, sold on February 12, 1825, to Monsieur Mittkoff for 1,500 francs.Very fine 18K gold quarter-repeating watch with duplex escapement in original morocco fitted box, with short gold chain and a key, accompanied by a Breguet certificate.

C. Four-body, "forme quatre baguettes", engine-turned, gold hinged cuvette with winding aperture. D. White enamel, Breguet numerals, outer minute ring, secret signature below 12 o'clock. Blued steel Breguet hands.M. 47 mm (20 3/4'''), gilt brass bar caliber, standing barrel with continuous Breguet stop work, ruby duplex escapement, brass escape wheel, plain three-arm brass balance, blued steel flat balance spring, index regulator with compensation curb, pare-chute on the top pivot, escapement jeweled and capped, movable star-wheel repeating with two hammers on two gongs through pull-and-twist piston in the pendant.Signed on the dial and cuvette, movement punched with the serial number, case punched with the watch and case serial numbers, casemaker's mark and French gold marks.Diam. 54 mm.

Breguet No. 873, "Garde-Temps", circa 1840.Very fine and interesting slim 18K gold astronomical pocket chronometer with phases and age of the moon and special escapement.

C. Three-body, "forme quatre baguettes", engine-turned, gold detachable cuvette. D. Silver, engine-turned with radial Roman numerals on a sanded chapter ring, sunk subsidiary seconds and moon phase aperture with its age on the border. Blued steel Breguet hands with unusual squared aperture inside the minute hand base for setting. M. 45,9 mm (21'''), gilt brass half plate, fusee with chain, Breguet continuous stop work on the fusee, female winding square and maintaining power, 15 jewels, Louis Bethoud type pivoted detent escapement, and three-arm brass-steel compensation balance with three trapezoidal temperature weights, each with one platinum nut and one platinum screw for mean time adjustment, free-sprung blued steel helical balance spring, ruby endstone.Signed on the dial, cuvette and movement.Diam. 53 mm.

Breguet et Fils, No. 2972, "Garde Temps", sold to Prince Rasoumovsky on September 28, 1816, for3,000 francs.Very fine, rare, and historically important 18K gold, early minute-repeating watch, accompanied by a Breguet certificate.

C. Four-body, "forme quatre baguettes", by Joly, No. 2072, engine turned back, band and bezels, gold detachable cuvette with winding and regulating apertures. D. Silver, radial Roman numerals on sanded ring, outer minute dot divisions, engine-turned center and edge. blued steel, Breguet hands. M. 44,3 mm (19 1/2'''), 11 jewels, ruby cylinder escapement with plain three-arm gilt brass balance with blued steel flat balance spring, pare-chute on top pivot, compensating curb fixed to the regulator,tanding barrel, repeating mechanism with continuous surprising piece and movable star wheel set on all-or-nothing lever, repeating by three hammers on two gongs by pull-and-twist piston in the pendant.Signed on the dial and cuvette.Diam. 51 mm.

Breguet, No. 2600/450, "Montre Premiere Classe", sold to the Princes d'Espagne à Valancay on October 12, 1811, for 3,600 francs.Very fine and rare 18K gold half quarter-repeating watch with regulator dial, jump hour hand, date and thermometer, with short gold chain and Breguet key, accompanied by a Breguet certificate.

C. Four-body, "forme quatre baguettes" by Secheret, engine-turned, gold, detachable cuvette with winding and regulating apertures. D. Silver, eccentric Roman hour chapter set at III o'clock, center minutes with 10-minute Arabic markers, subsidiary date at IX o'clock, thermometer sector below at VI o'clock. Blued steel Breguet hands.M. 39,05 mm, gilt metal, new bridge caliber, hanging barrel with continuous Breguet stop work, ruby cylinder escapement, three-arm gold balance, blued steel flat balance spring, entire five-wheel train jeweled to the center, transition between the minutes and hours via a wheel set on the double hour snail (assuring jump function), repeating by a single hammer on a gong through pull-and-twist piston in the pendant.Signed on the dial and cuvette, case with serial number and French gold marks, movement stamped 2600 under the dial.Diam. 43 mm.

Breguet No. 2, Horloger de la Marine Royal, "Garde Temps", sold to Comte Mercy d'Argenteau on January, 28, 1824, for 3,400 francs.Exceptionally fine and rare 18K gold half quarter-repeating pocket chronometer with jump hour hand, date, annual calendar indication and equation of time engraved on the cuvette, accompanied by original morocco fitted box and certificate.

C. Four-body, "forme collier", No. 118 made by Joly, engine-turned back, bezels and band, gold hinged cuvette engraved with equation table around the edge, winding aperture. D. Silver, radial Roman numerals, outer minute dot divisions, subsidiary sunk seconds between III and IV o'clock, symmetrically to the left 30-day date, secured by a screw above VI o'clock. Blued steel, Breguet hands. M. 26''', gilt bridge caliber, 20 jewels, straight-line calibrated long lever escapement, two-arm cut-bimetalic compensation balance with gold quarter screws and platinum temperature ones, blued steel Breguet balance spring, double roller table, gold dart, club-tooth steel escape wheel, repeating train with "anchor" governor, repeating on one gong with one hammer via an intermediate steel block.Signed "Breguet et Fils" on the dial, "Breguet, Horloger de la Marine Royale" on the cuvette.Diam. 57 mm.

Breguet et Fils, Horloger de la Marine Royale, No. 3519, "Montre Premiere Classe", sold to Général Davidoff on March 8, 1822, for 4,500 francs.Very fine and rare 20K gold, silver and enamel half quarter repeating watch with days of the week, date and secret compartment with an ivory miniature portrait of a lady, with a short gold chain and Breguet key, accompanied by a Breguet certificate No. 2533.

C. Five-body, "forme quatre baguettes" by Tavernier, back cover centered by Davidoff's coat-of-arms in champlevé black enamel, engine turned border, silver band, back cover cleverly fitted with secret inner cover with ivory miniature of a lady, push-piece on the band at XI o'clock to open the back cover, gold detachable cuvette with description of technical details of the watch in champlevé enamel and with winding and regulating apertures.D. Gold, Roman numerals, outer minute dot divisions, subsidiary seconds at IV o'clock concentric with days of the week, symmetrically at VIII o'clock subsidiary date, both with "basket" engine-turned centers, two secret signature on each side of figure "XII", signed on the reversed by Tavernier, and stamped with watch serial number. Blued steel, Breguet hands. M. 39 mm, gilt, "nouvelle" caliber with hanging barrel, ruby cylinder escapement, three-arm gold balance with blued steel flat balance sping, pare-chute on the top pivot, five-wheel train with large number of pinion leaves jeweled to the center, repeating by a single hammer on a gong through pull-and-twist piston in the pendant, Le Roy's anchor governor.Signed Breguet et Fils on dial and "Breguet" on cuvette, case stamped with watch and case serial numbers, casemaker's punch and French gold marks.Diam. 45 mm.

Breguet No. 5047, sold to Monsieur Maltsoff on July 16, 1833, for 1,400 francs.Very fine slim 18K gold watch with eccentric dial with regulator, with a short gold chain and gold Breguet key, accompanied by a Breguet certificate.

C. Three-body, "forme quatre baguettes", by Joly, No. 706, engine-turned, back cover with winding aperture opened by a small bolt at the band. D. Silver, eccentric, set at the top, radial Roman numerals on sanded ring, outer minute dot divisions, "basket" pattern engine-turned center with regulating aperture below XII o'clock, the crescent below the chapter ring engine turned with barley corn pattern. Gold Breguet hands. M. 37,7 mm (17'''), gilt brass, new bar caliber with hanging barrel with feale winding, continuous Breguet stop work, ruby cylinder escapement with rare three-arm jeweled gold balance, blued steel flat balance spring, pare-chute on the top pivot.Signed on the dial, case with serial number, casemaker's stamp and French gold marks.Diam. 43 mm.