Important Collectors’ Wristwatches, P...

Geneva, Hotel Des Bergues, Oct 20, 1991

LOT 321

Albert H. Potter & Co. Geneva, No.132, case No.3176, circa 1880. Important 18 ct. gold hunting-cased keyless pocket chronometer.

CHF 14,000 - 18,000

Sold: CHF 19,550

C. American three body, massive, "bassine", polished. D. White enamel with Roman numerals and sunk subsidiary seconds. Blued-steel "spade" hands. M. Glazed, 21"', nickeled patented caliber, "fausses côtes" decoration, 21 jewels, majority in screwed gold settings, great wheel screwed on to the barrel cap.Patent pivoted detent escapement, shock-absorbing counterpoise and off-set passing spring. Two arm cut bimetallic balance, bluedsteel helical balance spring, free-sprung with terminal curves. Signed on the dial and movement. In very good condition. Diam. 56 mm.


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Notes

This watch employs three of Potter's patents, the details of which are engraved on the bridges.The plate design, which is a virtual machining from the solid, was patented on Jan. 4.76, the escapement, and presumably the great wheel design, on Oct. I l . 75. Albert Potter's work is not only rare, but always of top quality and completely original design.