Swiss watch and compass in silver open faced case Circa 1920

Rare pocket watch and compass
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A rare Swiss lever watch and compass in a silver open faced case, circa 1920. Gilt three quarter plate keyless movement with going barrel. Plain cock with polished steel regulator, uncut bi metallic balance with overcoil hairspring. Club foot lever escapement. Very unusual white enamel dial combining both indications for the watch and the compass. Luminous Arabic numerals for the hours 1 – 12 and small red numerals for 13 – 24. At the center a star for the compass and at the edge the quarter cardinal compass points. The bezel has faded markings in degrees, blue steel hands. Faded engine turned silver open faced case.
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Diameter: 54 mm
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Signed: Montre Boussole.du Capitaine Vincent Brevetée importé de Suisse en France et a l’etranger
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A very rare watch using the same dial for both time and direction.