Elegant Swiss silver and enamel Art Deco lever Circa 1920-1930

Silver enamel decorated dress watch by Mido
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A fine and elegant Swiss silver and enamel Art Deco keyless lever dress watch, circa 1920-1930.
Rhodium-plated movement, Geneva striping decoration, 17 jewels, straight-line lever escapement, monometallic balance, Breguet balance spring, index regulator. Matte silver dial with applied gold dauphine numerals, outer gold dot minute divisions, subsidiary seconds, and original gold halberd hands. Asymmetric case, the band overlaid with opaque blue enamel, black enamel triangular bow, the back decorated with black and blue enamel stripes, winding crown set with a cabochon blue stone. Dial, case, and movement signed, case and movement numbered.
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Diameter: 47 mm
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Weight: 55 g
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Signed: Mido Swiss