Exceptional Horological Sale Celebrat...

Hotel Noga Hilton, Geneva, Apr 24, 2004

LOT 42

The Gerugross Breguet et Fils, No. 2898, sold on September 30, 1816 to Monsieur Gerugross for 4,000 francs. Exceptional and highly important small gilt bronze astronomical eight-day carriage clock built on the principles of the "Garde Temps", with jeweled lever escapement, quarter-repeating, alarm, phases of the moon, and digital calendar, in original leather fitted box. Accompanied by a certificate.

CHF 140,000 - 160,000

EUR 88,000 - 100,000 / USD 109,000 - 125,000

Sold: CHF 553,500

C. Multi-piece, "Empire", glazed on four sides and the top, four Doric type columns, one on each corner, with florally chased entablatures and bases, hinged front and back doors for access to the dial and the movement, engine-turned top with glazed center, pivoted handle with lion?s head hinges, four engine-turned gilt bun feet.D. Gilt brass engine-turned plate with aperture at the top for the silver hour and minute chapters with champlevé radial Roman numerals, outer minute dot divisions, engine-turned center with aperture for the phases of the moon with its age scale on the edge. Blued steel Breguet hands. Below winding aperture, to the right alarm setting and winding apertures in rose gold cartouche, at the lower part three apertures for the days of the week, date and months with year aperture just above the date.M. Rectangular, 95 x 60 mm, brass, going barrel, 5-wheel train, straight line calibrated lever escapement set as an integral part of the train (without platform), with pallet fork having sapphire insert for the pallets, draw on both pallets, larger on the exit, circular rest surphases, convex entry pallet, concave the exit pallet to equalize the lifts, gold safety guard, double roller, cut-bimetallic 3-arm compensation balance with Breguet balance spring with platinum temperature sliding weight, pare-chute on the top pivot, jeweled balance and escape wheel, Breguet type repeating system with all-or-nothing and hammer pushers sliding vertically to the plane of the single rack, repeating by a single hammer on a bell by depressing a push-piece at the top of the case, ingenious simple calendar mechanism utilizing small arbor similar to verge escapement staff with flags advancing the day and date, alarm on the same bell with its own hammer. Signed on the dial, case punched with the same numer on one of the feet.Dim. Height 11 cm (without handle) width 8.5 cm, depth 6.3 cm.


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Grading System
Grade:
Case: 3

Good

Movement: 3

Good

Dial: 3 - 6 - 01

Notes

From Family of the Original Owner This outstanding carriage clock stands out as remarkable, even among Breguet carriage clocks. It is described in the registers as a "Petite Pendule à Almanac". This is the only almanac (calendar) clock which is described as "small". The carriage clock, as we know it today, was designed and invented by Breguet around 1795. In 1798 he sold his first one to Napoleon Bonaparte (No. 178, sold by Antiquorum on April 14, 1991, lot No. 10). Both have the same type of case, a full digital calendar based on revolving cylinders, the phases of the moon on the same portion of the dial, and the same repeating mechanism. Examining Breguet?s carriage clocks one is astonished to see how far ahead of his time he was. Indeed, although the basic movements are strikingly similar, more recent clocks rarely match those of Breguet in finish and complication. Breguet made approximately 90 carriage clocks, many of them in mahogany cases. Those in gilt brass cases are scarce and rarely come onto the market. In addition to its size, one should stress the remarkable degree of precision Breguet put into the finish of this clock and the utmost care and attention given to its details. The escapement, the heart of every timekeeper, is a marvel of watchmaking skill, far ahead of its time. The application of a lever escapement is rare for the time and was attempted by only the best watchmakers. It is superbly finished, in a manner on a par with the best horologists of the 19th century, and even later. The escapement has draw to prevent accidental stopping during transport, it has specially curved sapphire inserts in the pallets, one convex, the other concave, to equalize the momentum exerted on the balance during both swings. The final equalizing is done by the specially calibrated tail of the fork. The balance itself is made like the ones found only in his best "Garde Temps" chronometers. It has three bimetallic segments and three platinum sliding weights for temperature adjustment. Breguet plac d elastic suspension on the balance pivot to minimize the risk of breaking the balance if the clock were dropped. He jeweled the escapement, at a time when jeweling was very expensive and not yet common on the continent. In fact Breguet, had brought back a master watch jeweler, Mr. Hooker, from one of his trips to England. The work done on the escapement and the finishing cost him six times more than the cost of the entire case! For the repetition mechanism Breguet chose his own system, very clever in construction, utilizing a single rack for striking the hours as well as the quarters with an ingenious lifting mechanism that "knows" when to move the lifting pallets away the rack, to strike only the correct number of hours and quarters. When describing the technical aspects of the mechanism, we must also mention the simple though ingenious way in which motion was transmitted from the hour wheel to the calendar. He utilized an arbor such as the arbor of the old verge escapement, fixed on one side to a wheel (gearing with the hour wheel), where one flag at the bottom advances the days of the week and the other the date. All this was difficult, time-consuming and costly, which explains the price Breguet asked for the clock: a staggering 4000 francs, when a simple silver Breguet watch might be bought for less than 500 francs.