Swiss gold hunting cased chronometer pocket watch Circa 1880

Gold hunter with pivoted spring detent escapement
–
A Swiss 18 carat gold hunting cased keyless pocket chronometer with counterpoised pivoted spring detent escapement, made by Albert H. Potter & Co. in Geneva, circa 1880. A massive case with engine turned covers, gold rimmed glazed cuvette. White enamel dial with radial Roman numerals, outer minute track, large subsidiary seconds and blued steel Breguet hands. A nickel plated movement, patented calibre, spotted decoration, 22 jewels, most in gold screwed chatons, rocking bar keyless work, gold wheel train with five arm crossings, patented pivoted detent escapement, counterpoised detent, gold passing spring, the exit pallet on the detent pivot, jewelled rollers, two armed cut bimetallic compensation balance with gold temperature adjustment screws and large platinum quarter screws, blued steel free sprung helical balance spring with terminal curves, patented going barrel, lever handset. Dial, case and movement are signed.
–
Diameter: 56 mm
–
Signed: Albert H. Potter & Co. Geneva
–
This watch employs three of Potter’s patents, the details of which are engraved on the bridges. The plate design was patented on January 4, 1875, the escapement and presumably the great wheel design, on October 11, 1875. Albert Potter’s work is not only rare but always of top quality, and offering a completely original design.