Diamond and sapphire set Swiss platinum lever Circa 1927

A fine and rare Swiss platinum, enamel, diamond and sapphire set open faced pocket watch, circa 1927. 10.85 Ligne nickel lever movement, 17 jewels. En grisaille enamel dial in cobalt blue depicting a classical maiden atop a lion, diamond set chapter ring with sapphire set Arabic indexes, band, reverse bezel, pendant and bow engraved with Greek key motif, snap back. Movement and case signed. Total diamond weight approximately 3.00 cts.
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Diameter: 41 mm
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Signed: Longines
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Longines confirms production of this watch and its sale to Messrs Zivy, the firm’s agent in Mexico, on January 10th, 1927.