German silver lever with up-and-down indicator Circa 1945

Silver open faced lever deck watch by VEB Glashütter Uhrenbetriebe (GUB)
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A German silver open faced keyless lever deck watch with up-and-down indicator, circa 1945. 3/4 Plate gilt finished lever movement, bimetallic compensation balance. Metal cuvette. Silvered dial with Arabic numerals, two subsidiary dials indicating 35 hours power reserve and constant seconds. Engraved case, snap-on back. Case and movement signed and numbered.
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Diameter: 58 mm
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Signed: VEB Glashütter Uhrenbetriebe