Important Collectors’ Wristwatches, P...

New York - The Fuller Building, Mar 28, 2007

LOT 140

?Minute-Repeating? Albert H. Potter & Co. Geneva, No. 305, case No. 1305. Made circa 1890. Very fine and rare, hunting-cased, keyless, minute-repeating, 18K yellow gold pocket watch.

USD 25,000 - 35,000

EUR 20,000 - 27,000

Sold: USD 29,500

C. Three-body, "bassine", solid, polished. D. White enamel with radial Roman numerals, sunk subsidiary seconds dial. Blued steel "Breguet" hands. M. Cal. 43 mm. (19???), ?maillechort?, 29 jewels, some in screwed gold chatons, straight-line counterpoised lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, ?swanneck? micrometer regulator, repeating on gongs by activating slide on the band. Dial and movement signed, case numbered. Diam. 52 mm.


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Grading System
Grade: AAA

Excellent

Case: 3

Good

Movement: 3-6*

Good

Slightly oxidized

Overhaul recommended, at buyer's expense

Dial: 3-50-01

Good

Refreshed

HANDS Original

Notes

Albert H. Potter (1836 - 1908) Born in Mechanicville, New York, Albert Potter began his three-year apprenticeship in 1852 with Wood & Foley in Albany. He then established himself at 19, John Street and later at 84, Nassau Street, New York. There, in addition to repair work, he made some thirty five three-quarter plate movements, part with lever and part with detent escapements, cased in gold, which he sold for $225 to $350. In 1861 he went to Cuba where he continued the same kind of work for five years, adding to his designs a quarter repeater and a form of duplex escapement. Back in New York, he took out his first escapement patent in 1868 and soon afterwards moved to the West. He stayed in Minneapolis a short time and possibly in Milwaukee, but by 1870 he settled in Chicago. In 1872, with his brother William Cleveland Potter, he organised the firm Potter Brothers, which was dissolved in 1875, although the business was continued by W.C. Potter until his death. In October 1875, Potter took out patents on compensation balances and improvements in escapements for watches, assigning one half of his rights to John H. Mc Millan of Chicago. The latter may have been in partnership with Potter in his early venture in Switzerland. During his residence in Chicago, Potter designed and built a pocket chronometer which may be considered as his masterpiece. This watch was the prototype from which he made several examples in Geneva, where he obtained his Permis d?Etablissement on February 11, 1876. In an article in the Horological Journal of May 1882, Potter wrote that he invented, made drawings and working models of fourteen different escapements. Among these was also a tourbillon lever escapement which had the escape wheel stationary and the anchor moving around with the cage five times per minute, making the reversals of the momentum too rapid for good performance. Consequently, it was never sold and further examples were never made. As an improvement to that, Potter took a patent in 1886 for an escapement without escape wheel, first invented by Deshay in 1825 and brought out again by Mac Dowell at the London Exhibition of 1855. This patent, with others pertaining to the Charmilles watch, was assigned to the New Haven Watch Company for a reputed fifty thousand dollars. The Charmilles watch was an attempt to produce good timekeeping movements at low prices. Albert H. Potter died on January 25, 1908, 23, rue Tronchin, in Geneva.