The Sandberg Watch Collection

Hotel Richemond, Geneva, Mar 31, 2001

LOT 30

Tavernier à Paris, circa 1765.Very fine and unusual astronomical 20 ct. gold, diamond-set, double-face dumb and à tact quarter repeating, mnemonic and manual perpetual calendar watch with year indication.

CHF 25,000 - 30,000

USD 15,000 - 18,000

Sold: CHF 113,500

C. Two-body, 'Louis XV', glazed on both sides, the bezel on the calendar side chased and engraved with symbols of science, love and hunting, the other with flowers. Pushpiece set with a large diamond. D. On the front, white enamel dial with Roman chapters, outer minute ring with five-minute Arabic numerals. Silver diamond-set 'Louis XV' hands. On the back, the gold calendar dial, engine-turned with a straight line pattern, the centre with days of the week chapter with diamond-set hand, on top anaperture for the phases and age of the moon, at 2 o'clock aperture for the year with indications until 9999, at 4 o'clock aperture for months with the number of corresponding days, at 6 o'clock regulating sector, at 8 o'clock aperture for days of the month, at 9 o'clock division of the day into four parts, with the pointer to indicate when the calendar must be reset. M. 37.2 mm o, hinged gilt brass full plate with cylindrical pillars, fusee and chain, verge escapement, plain three-arm steel balace, continental cock, repeating by depressing the pendant.Signed on the edge of the dial plate and the dial.Diam. 48 mm. Published in the Sandberg book, page 144-145.


LOADING IMAGES
Click to full view
Image
Grading System
Grade:
Case: 3

Good
Movement: 3*

Good

Overhaul recommended, at buyer's expense
Dial: 3 - 6 - 01

Notes

The indications for the month and its duration, the date, the days of the week, and the four divisions of the day all progress mechanically. The year must be changed manually. The calendar mechanism is run directly from the fusee. The main advantage of this is that the power used for driving the calendar is almost insignificant and does not influence the performance. However, a click wheel on the fusee ensures that the calendar will not be affected when the watch is wound.Tavernier Jean-Pierre (d. aft. 1804)Father of Louis and Pierre-Benjamin. Received as Master on 1 March 1746, established rue de Bussy. He was particularly renowned for his watches, but also sold clocks, using cases by B. Lieutaud and F. Rémond. Among his clients was the duc de Caylus. After Jean-Pierre's death, his activity was continued by his son Louis.'Les Ouvriers du Temps', Jean-Dominique Augarde, Editions Antiquorum, Genève, 1996.