Albert H. Potter & Co., Geneva, circa 1870.Unique, 18K pink gold, hunting cased, keyless, pocket lever chronometer with twelve seconds revolving tourbillon regulator.

C. Custom made, four body, massive, "bassine et filets", polished. D. Custom made white enamel with Roman numerals and sunk subsidiary seconds. Blued steel Breguet hands. M. 21''', nickel plated, patented calibre, spotted decoration, 15 jewels, majority in screwed gold settings, great wheel screwed on to the barrel cap. Lever escapement of very original type, the escape wheel being stationary and the anchor moving around with the cage five times per minute, cut bimetallic balance, free sprung Brguet balance spring.Diam. 56 mm.

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.

Albert H. Potter & Co. Geneva, No. 305, made,circa 1900.Rare 18K gold, hunting cased, keyless minute repeating watch.

C. Three body, massive, "bassine", polished. D. White enamel with Roman numerals and sunk subsidiary seconds. Blued steel Breguet hands. M. Glazed, 20''', nickel plated, 29 jewels, partly in screwed settings, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring with swan neck micrometric index. Repeating on gongs with slide in the band.Signed on the dial and movement.Diam. 52 mm.

Albert H. Potter & Co., Geneve, circa 1870. Unique 18K pink gold hunting cased keyless pocket lever chronometer with twelve seconds revolving tourbillon regulator.

C. Custom made four body, massive, "bassine et filets", polished. D. Custom made white enamel with Roman numerals and sunk subsidiary seconds. Blued steel Breguet hands. M. 21"', nickel plated, patented caliber, spotted decoration, 15 jewels, majority in screwed gold settings, great wheel screwed on to the barrel cap. Lever escapement of very original type, the escape wheel being stationary and the anchor moving around with the cage five time by minute, cut bimetallic balance, free sprung Breguet balance spring. Diam. 56 mm.

Albert H. Potter & Co., Geneva, No. 109, circa 1880. Rare 18K gold, hunting cased, keyless pocket chronometer.

C. Three body, massive, " bassine et filets" engineturned, the cover centred with the monogram "F. P." and engraved inside with the name of the owner "Frank Parmelee ", the back centred with the date: "1880" . Glazed gold cuvette. D. White enamel with Roman numerals and sunk subsidiary seconds. Blued steel Breguet hands. M. 21"', nickel plated, calibre patented on January 4, 1876, "fausses cotes " decoration, 21 jewels, majority in screwed gold settings, great wheel screwed on to the barrel cap, patented on October 11, 1875. Pivoted detent escapement patented on October 11, 1875, shockabsorbing counterpoised and off-set passing spring. Two-arm cut bimetallic balance, free sprung helical balance spring with terminal curves. Signed on the dial and movement. Diam. 56 mm.

Albert H. Potter, Newark, New Jersey, circa 1900. Fine and very rare ebonised long case weight driven regulator.

C. Architectural, ebony veneered on oak with glazed front and side panels, the top with a triangular pediment. D. Square silvered of regulator type with outer Arabic minute ring and small inner sunk subsidiary hour and seconds dials. Blued steel "lance" hands. M. Brass rectangular with massive plates, cylindrical pillars secured by screws, barrel with maintaining power, lantern pinions, gravity escapement drawn from the celebrated Denison three-legged. Heavy seconds beating pendulum with spring suspension. Signed on the dial. Dim. 221 x 51 x 30 cm.

Albert H. Potter & Co., Geneva, No. 4, made circa 1890. Rare 18K gold, hunting cased, keyless pocket chronometer.

C. Three body, massive, "bassine et filets" engineturned, the cover centre with a small monogram. Glazed gold cuvette. D. White enamel with Roman numerals and sunk subsidiary seconds. Blued steel Breguet hands. M. 21 -, nickel plated, patented caliber, spotted 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, free sprung helical balance spring with terminal curves. Signed on the dial and movement. Diam. 56 mm.

Albert H. Potter & Co., Chicago (U.S.A.), made circa 1880, timed by James Murset. Rare keyless pocket chronometer workshop case.

C. Three piece, massive with glazed back and milled bezels. D. White enamel with Arabic numerals and sunk subsidiary seconds. Blued steel Breguet hands. M. 21 "' , nickel plated, patented calibre, the bridges with "fausses cotes " 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, free sprung spherical balance spring. Signed on the movement. Dial signed by the precision timer. Diam. 56 mm.

Albert Potter & Co., Geneva, No. 486, circa 1880. Fine and most interesting, 18K gold, moon phase astronomical watch with unusual perpetual calendar.

C. Double body, massive, "bassine et filets", the engine-turned back engraved with the monogram "C.N.C.". D. White enamel with Roman numerals, outer Arabic minute ring, moon phase aperture and sunk subsidiary seconds with inner perpetual calendar showing only the date, with the small hand automatically jumping from the last day of the month to the first of the next, whether it is a month of 28, 29, 30 or 31 days. Blued steel "spade" hands. M. 18"', gilt brass, 18 jewels, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring. Signed on the case and movement In very good condition. Diam. 51 mm.

Albert H. Potter & Co. Geneva, No. 305, circa 1890. Very fine 18 ct. pink gold hunting cased, minuterepeating keyless watch.

C. Four body, massive, "bassine", polished. D. White enamel with Roman numerals and sunk subsidiary seconds. Blued steel Breguet hands. M. Glazed 19"', nickel plated, 31 jewels in screwed settings, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring with swan neck micrometric index. Repeating on gongs with slide in the band. Signed on the dial and movement. In very good condition. Diam. 53 mm.

Albert H. Potter, Newark, New Jersey 1900. Fine and very rare ebonised small long case weight driven regulator.

C. Architectural, ebony veneered on oak with glazed front and side panels, the top with a triangular pediment. D. Square silvered of regulator type with outer Arabic minute ring and small inner sunk subsidiary hour and seconds dials. Blued steel "lance" hands. M. Brass rectangular with massive plates, cylindrical pillars secured by screws, barrel with maintaining power, lantern pinions, gravity escapement drawn from the celebrated Denison three-legged. Heavy seconds beating pendulum with spring suspension. Signed on the dial. In very good condition. Dim. 183 x 48 x 28 cm.

Albert H. Potter & Co. Genève, No. 319, circa 1885. Fine and rare 18 ct. gold hunting cased, minuterepeating moon-phase astronomical keyless watch with perpetual calendar.

C. Four body, massive, "bassine et filets", polished, a monogram engraved on the back with an engraved dedication inside dated 1890. Glazed gold cuvette. D. White enamel with Roman numerals, subsidiary dials for week days, months of the leap year cycle, the date and seconds with inner moon-phase aperture. Blued-steel "spade"" hands. M. 19"', nickel plated, "fausses côtes" decoration, 31 jewels, part in screwed settings, counterpoised adjustable straight fine lever escapement, cut bimetallic balance, Breguet balance spring. Repeating on gongs with slide in the band. Signed on the dial, case and movement. In very good condition. Diam. 53 mm.

Albert H. Potter & Co. Geneva, No. 17, made circa 1880. Rare 18 ct. gold, hunting cased, keyless pocket chronometer.

C. Three body, massive, "bassine et filets" polished. Glazed gold cuvette. D. White enamel with Roman numerals 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 barre) cap. Patented pivoted detent escapement, shock-absorbing counterpoised and off-set passing spring. Two armed cut bimetallic balance, free sprung helical balance spring with terminal curves. Signed on the dial, case and movement. In very good condition. Diam. 56 mm.

Albert H. Potter & Co. Geneva, No. 102, made for Henri Kreig, Paris, circa 1880. Rare and unusual, 18 ct. gold, hunting cased, keyless pocket chronometer.

C Three body, massive, bassine et filets, engine-turned, with Iater cover and back panels. D. white enamel with Roman numerals, outer Arabic minute ring and sunk subsidiary seconds. Blued steel Breguet hands. M. Glazed, 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 armed cut bimetallic balance, helical balance spring, free sprung with terminal curves. Signed on the movement. In very good condition. Diam. 56 mm.

Albert H. Potter & Co. Geneva, No. 24, made, circa 1880. Rare18 ct. 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 armed cut bimetallic balance, helical balance spring, free sprung with terminal curves. Signed on the dial, case and movement. In very good condition. Diam. 56 mm.

Albert H. Potter & Co. Genève, No. 319, circa 1890. Fine and rare 18ct. gold hunting case, minute-repeating moon phase astronomical keyless watch with perpetual calendar.

C. Four body, massive, "bassine et filets", polished, a monogram engraved on the back with an engraved dedication inside. Glazed gold cuvette. D. White enamel with Roman numerals, subsidiary dial for week days, months of the leap year cycle, the date and seconds with inner moon-phase aperture. Blued-steel spade hands. M. 19?, nickel plated, "fausses côtes" decoration, 31 jewels, part in screwed settings, counterpoised adjustable straight line lever escapement, cut bimetallic balance, Breguet balance spring. Repeating on gongs with slide in the band. Signed on the dial, case and movement. in very good condition. Diam. 53 mm.

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

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.