Fine Swiss elegant lever watch with black 24 hour dial Circa 1930

Stainless steel keyless pocket watch
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An elegant, large and thin stainless steel open faced keyless lever pocket watch made by Eduard Gübelin in Luzern, Switzerland, circa 1930.
The polished case has an inclined bezel, stepped band, inverted U shaped bow and flat topped winding. Black dial with applied steel baton indexes, an outer minute track, inner Arabic 24 hour numerals and steel épée hands.
Rhodium plated movement, 16 jewels, a straight line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring and an index regulator.
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Diameter: 56 mm
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Signed: E. Gubelin Swiss
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Accompanied by a watch chain.