Swiss silver Art Nouveau triangular pocket watch Circa 1910

Silver open faced lever
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A Swiss silver Art Nouveau triangular keyless pocket watch by Record Watch Co., Tramelan (Bernese Jura), circa 1910. The case back is engraved with a sunburst motif, alternating polished and engraved sectors, made by Holy Frères, Saint Imier. White enamel dial, radial Arabic numerals, outer minute track, and retrograde hands. A fancy, triangular shaped, rhodium plated metal movement, going barrel, straight line lever escapement, uncut bimetallic compensated balance with gold poising screws and blued steel hairspring with terminal curve, polished steel index regulator. The dial, case and movement are signed.
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Dimensions: 72 x 60 mm
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Weight: 101 g
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Signed: Record Watch Co. Tramelan (Bernese Jura)
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Accompanied by a copy of the invention patent.
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Movement based on the Swiss invention patent No. 27 961, delivered on April 9, 1903, to Giovanni Sgherlino, Turin, for a Pièce d’horlogerie.