Unusual Swiss silver marksman’s lever watch Circa 1920

Silver open faced lever by Longines
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An unusual Swiss silver open faced marksman’s lever pocket watch, circa 1920. Longines precision lever movement. White enamel dial with black and red Arabic numerals, outer minute divisions, subsidiary seconds and blued steel Breguet hands. The case partly with niëllo decoration and inscribed Bernisches Kantonal Schützenfest Interlaken 1920.
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Diameter: 52 mm
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Weight: 96 g
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Signed: Longines