Rare Swiss silver Art Nouveau lever watch Circa 1910

Silver open faced lever by Longines
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A rare swiss silver open faced Art Nouveau lever pocket watch made for the Russian market, circa 1910. Gold-plated lever movement. White enamel dial with black Arabic hours and gold minute dots, subsidiary seconds, rose gold hands. Relief case, rim with floral motifs and masks, relief representation on the reverse, inscribed Hiver (winter) on the edge. Dial signed, movement signed and numbered.
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Diameter: 51 mm
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Weight: 90 g
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Signed: Longines