Rare Swiss 18 carat gold full hunter with six complications Circa 1885

Gold minute repeater by Albert H. Potter & Co. 
–
A rare Swiss 18K gold hunting cased keyless pocket watch with six complications, circa 1885. With a perpetual calendar, moon phases and minute-repeater. Glazed gold-rimmed cuvette to view the movement. White enamel dial with radial Roman numerals, outer minute track, subsidiary dials for weekdays, months of the leap year cycle, the date and seconds with inner moon phase aperture and blued steel spade hands. A nickel-plated movement, 31 jewels, wolf’s tooth winding, part in screwed settings, counterpoised straight-line lever escapement, cut bimetallic compensation balance, Breguet balance spring with overcoil, repeating on gongs activated by a slide on the band. Dial, case and movement signed.
–
Diameter: 52.5 mm
–
Signed: Albert H. Potter & Co.  Genève
–
To the best of our knowledge, this is only the second watch by Potter of this model to appear at auction. Another example was sold from the Atwood Collection, Sotheby’s, New York, December 1, 1986.