Swiss 14 carat gold open faced keyless pocket watch Circa 1933

Gold lever by Longines
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A Swiss 14 carat yellow gold open faced keyless pocket watch, made by Longines in Saint-Imier, Switzerland, circa 1933. A solid, polished case with a monogram HW on the back. The dust cover is engraved with a dedication, Souvenir d’Henry. A gold dial, outer ring for minutes and hours and gold Breguet Arabic numerals, subsidiary seconds at 6, and has gold Art Deco hands. The movement has a fine Geneva Anker chronometer escapement. The dial, case (with initials and presentation inscription), and movement are signed.
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Diameter:  48 mm
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Weight:  77 g
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Signed: Longines  Saint-Imier
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The dial is slightly scratched.
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According to the Longines archives, this watch received a first class bulletin d’observatoire from the watchmaking school.