Rare small American gold enamel ladies watch Circa 1910

Rare open faced pocket watch by Tiffany & Co.
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An American miniature gold and enamel ladies’ watch with diamond trim, circa 1910.
Ultra flat 18 Carat gold case, fantastic green guilloché enamel on the back with white edges, a large diamond rose in the center, surrounded by further small diamond roses, the temple also set with small diamond roses on both sides. Very fine, flat rhodium plated lever movement, 15 jewels, straight line lever escapement, cut bi metallic compensation balance, blued steel flat balance spring and an index regulator. Beautiful engine turned dial, signed Tiffany & Co, Arabic radial hours, outer minutes track and steel pear hands.
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Diameter: 27 mm
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Weight: 13 g
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Signed: Tiffany & Co.