Large German astronomical museum quality watch Circa 1660

Silver pocket and coach clock with calendar
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An exceptionally large and important German silver astronomical verge pocket and coach clock of very good quality with calendar, moon phase, date, planets of the day and months with names and lengths, circa 1660-1700. Full plate fire gilt movement in very good condition with chain and fusee, a verge escapement with worm wheel set up and three arm balance with blued balance spring by Pierre Caillatte from Heidelberg. Signed under the pierced and engraved balance cock.
Extremely rare and magnificent gilt dial decorated with delicate floral ornaments, an early triple calendar, moon phases and two silver decentralized displays for the time and date, the date display with the moon phase inside, the symbols for the months with names and lengths are visible in two apertures at 3 and 9 o’clock and are as exquisitely engraved as the expressive face of the moon phase, one handed. Intact and in excellent condition. A plain outer case.
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Diameter: 63.5 mm
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Weight: 197 g
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Signed: Pierre Caillatte Heidelberg
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This is truly an outstanding timepiece, in technical design and its exceptional artistic execution. The present timepiece was modernized around 1700, see the movement decoration, conversion from gut thread to chain and fitting with a spiral spring. The optical condition of this rarity is fantastic, the large format is exceptionally rare.
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Normal signs of use, a small dent in the band at 11 o’clock.
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This astronomical pocket watch was made by Pierre Caillatte from Heidelberg. The watchmaking family was active in the 17th century, first in Geneva and later in Copenhagen.
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Reference 070000