Swiss gold chronometer with one-minute Tourbillon Circa 1877

Kenmerk: TA1977
Diameter: 57 mm

Estimate: € 50.000 - 80.000
Price sold: € 57.600

Gold hunter with pivoted spring detent escapement
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A very fine and very rare Swiss, 18K rose gold, hunting cased, keyless pocket chronometer, circa 1877. With one-minute Guinand type II tourbillon regulator and pivoted spring detent escapement. A massive case, engine-turned, the cover centred with a monogram, engraved hinged gold cuvette, the interior with engine-turned decoration, glazed gold-rimmed cover to view the movement. White enamel dial with painted radial Roman numerals, outer five-minute Arabic numerals and minute markers and subsidiary seconds. Blued steel pierced tulip hands.
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A nickel-plated movement, geometric decoration, gold wheel train, 15 jewels in gold châtons, pivoted spring detent escapement, cut bimetallic compensation balance with gold screws, blued steel Breguet balance spring with Phillips curb and perpendicular stud for preventing excessive amplitude, Guinand type II polished steel tourbillon carriage with gold index scale. Dial, cuvette and movement signed.
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Diameter: 57 mm

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Signed: Girard-Perregaux Chaux-de-Fonds
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Ernest Guinand (c. 1810-1879) was an important Master Horologist from Le Locle, who, along with Auguste Grether from Ponts-de-Martel (1817-1879), specialized in the production of tourbillon carriages. According to the records of the Neuchâtel Observatory, Guinand’s production of tourbillons began between 1865 and 1867. He designed three models of Tourbillon carriages, always based on an A-shaped frame. He worked for several important makers, including Girard-Perregaux and Montandon. Most of Guinand’s carriages were equipped with a pivoted detent escapement, one with spring detent and some with lever escapement. Most of his carriages were not signed and can only be identified by their characteristic A-shape. In 1864 Patek Philippe chose him to build their first tourbillon regulator.

Signed: Girard-Perregaux Chaux-de-Fonds