Watch no. Unknown
18?? - Potter, Geneve
1995 - Christie's, 12 Jul 1995, est £25-35,000, sold £35,600, " THE POTTER CHRONOMETER AN AMERICAN EIGHT-DAY MARINE CHRONOMETER OF EXCEPTIONAL QUALITY AND CONSTRUCTION WITH "PIVOTED" DETENT Albert H. Potter, unumbered, circa 1880 the silvered? dial signed Made by Albert H. Potter For W.W. Griscom, Roman hour numerals, gold hour and minute hands, subsidiary seconds and up-and-down dials with blued steel hands, all movement plates, potance and balance cock satin gilded, jewelled to the centre with screwed chatons, the main frame assembly inscribed ALBERT H. POTTER & CO. Escapement Pat Oct. 11 1875 carrying barrel fusee (reversed) and centre wheel, sub-frame assembly inscribed Balance Pat. 11.75 carrying chain protector remainder of train and Earnshaw escape, Potter patent cut bimetallic balance of complex construction carrying two semi-circular bimetallic auxiliaries each with adjustable radical screws, blued steel helical balance spring with terminal curves, Potter's patent pivoted detent (Patent Nos. 168 582 of 11 October 1975), brass bowl, gimballed in brass-bound mahogany box, plain bone ivory disc to centre section, flush inset brass handles 118mm. dial diam., 206mm. sq. box Provenance W.W. Griscom and by family descent, bought from his neice by the present owner. "