The Art of Horology in Geneva

Geneva, Hotel Des Bergues, Nov 13, 1999

LOT 147

Albert H. Potter & Co. Geneva, No. 24, made,circa 1880.Rare 18K gold, hunting cased, keyless pocket chronometer.C Three body, massive, bassine et filets, engine-turned. D. White enamel with Roman numerals, outer Arabic minute ring and sunk subsidiary seconds. Blued steel Breguet hands. M. 21''', nickel plated, patented caliber, fausses côtes decoration, 21 jewels, majority in screwed gold settings, great wheel screwed on to the barrel cap. Patented pivoted detent escapement, shock-absorbing counterpoised and off-set passing spring. Two-arm cut bimetallic balance, helical balance spring, free sprung with trminal curves.Signed on the dial, case and movement.Diam. 56 mm.

CHF 30,000 - 35,000


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Grading System
Grade: AAA

Excellent
Case: 3

Good
Movement: * 4 - 6
Dial: 3 - 01

Notes

This watch uses three of Potter's patents, the details of which are engraved on the bridges. The plate design, which is virtual machining from the solid, was patented on January 4, 1876, the escapement and presumably the great wheel design, on October 11, 1875.Albert Potter's work is not only rare, but always of top quality and completely original design.