French gold open faced pocket chronometer watch Circa 1907

Unsigned gold pocket lever watch
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A French 18 carat gold open faced chronometer watch, circa 1907. The watch features a hand wound mechanical movement with lever escapement. The white enamel dial includes Arabic numerals, a subsidiary seconds dial at six o’clock, railway minute divisions, outer 13-24 hour numerals, and spade hands. The 18 carat gold case has a gold dust cover and an engraved caseback with the monogram PC (?).
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Diameter: 48 mm.
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Weight: 90 g
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Signed: No name