French 18K gold lever watch with chronograph Circa 1890

Gold open faced keyless pocket watch by Le Roy & Fils
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A French gold Parisian pocket watch with chronograph and rare central minute counter, circa 1890.
Bridge movement, gold screw compensation balance. White enamel dial with radial Roman numerals, outer minute track and concentric fifths of a second track with Arabic five minute/second numerals, subsidiary seconds, and yellow gold spade hands. 18K gold monogrammed case. Cuvette with dedication engraving.
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Diameter: 50 mm
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Weight: 106 g
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Signed: Le Roy & Fils