The Sandberg Watch Collection

Hotel Richemond, Geneva, Mar 31, 2001

LOT 252

Johan Bock (Frankfort), Germany, circa 1635.Very fine and rare, oval, gilt brass and silver, astronomical moon phase alarm pendant watch with perpetual manual calendar.

CHF 30,000 - 40,000

USD 18,000 - 25,000

Sold: CHF 80,500

C. Two-body, oval gilt brass with silver, engraved cover and polished back, the silver band pierced and engraved with foliage, tulip pendant, loose ring and button finial. D. Oval, gilt brass, eccentric Roman chapter ring set at the lower part with inner rotating Arabic numeral alarm dial with steel marker for the hours, subsidiary silver ring above for the days of the month, inner indication for the months and their duration, dial on the left for days of the week and apertures on the right forhe age and phases of the moon. Blued-steel 'arrow' hands.M. 35 x 42 mm, oval, hinged, gilt brass full plate engraved on the border with flowers and foliage, turned vase pillars, fusee with gut-line for the going train, verge escapement, two-arm brass balance circular foliot, elongated pinned cock pierced and engraved with asymmetrical floral decoration with matching click for the ratchet wheel set-up, fixed barrel for alarm, strikes on a bell fastened to the bottom of the case.Signed on the back plate J. Bock F(ecit).Dim. 67 x 38 mm. Published in the Sandberg book, pages 56-57.

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Grading System
Case: 3 - 8 - 15
Movement: 3 - 7 - 8*
Dial: 3 - 04


Bock Johanis recorded as having worked in Frankfort around 1640.