Russian silver watch with pivoted detent escapement Circa 1900

Silver chronometer deck watch
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A very fine and rare German, keyless, silver deck and pocket chronometer with spring detent escapement and Guillaume balance, circa 1900. Precision Timekeeper, August Ericsson, St. Petersburg. A polished with gold hinges. Hinged silver cuvette. White enamel dial with bold radial Roman numerals, outer minute track, subsidiary seconds dial. Blued steel spade hands. Frosted gilt, 15 jewels, Earnshaw- type spring detent escapement, anibal-brass Guillaume compensation balance with gold temperature adjustment screws, blued steel Breguet balance spring, index regulator. Dial and case signed, movement numbered on the pillar plate.
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Diameter: 58 mm
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Signed: August Ericsson St. Petersburg
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August Ericsson (1842 – circa 1910) was born in Sweden, he established an impressive business in St. Petersburg, Russia, around 1875. Most of the marine chronometers supplied to the Imperial Navy were made by him; they generally used Kullberg movements. One of his brothers, Bror, founded the Stockholm Watchmakers, Association in 1884, and one of his sons, Alexander, became a chronometer maker.