French silver open faced keyless lever deck watch Circa 1930

Silver pocket watch accompanied by wooden box
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A rare French sterling silver keyless deck/pocket watch, circa 1930. Accompanied by the original double-hinged wooden box. A solid case, hinged sterling silver cuvette with an inscription, case back engraved: No. 143 J. Fournier. White enamel dial with painted radial Roman numerals, outer minute track, subsidiary seconds dial and blued steel spade hands. A frosted gilt movement, 19 jewels, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, swan-neck micrometre regulator. Dial, case and movement signed.
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Diameter: 58 mm
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Signed: J. Fournier, Horloger de la Marine  Paris
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J. Fournier (1834-1920), Horloger de la Marine, he began his production in 1888 and was awarded the 1st prize at the timing contest organised in 1889-1890, with chronometer No. 2.