French 18K gold hunting cased lever chronometer Circa 1870

Gold pocket chronometer by Breguet 
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A French 18 carat gold hunting cased lever pocket chronometer, circa 1870. Bridge movement, lever escapement, gold screw compensation balance. White enamel dial with Roman hours, Arabic five-minute numerals, sunk subsidiary seconds and a secret Breguet signature. Engine-turned and monogrammed case. Cuvette and case signed and numbered, movement numbered.
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Diameter: 50 mm
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Weight: 105 g
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Signed: Breguet