Elegant French platinum repeating lever watch Circa 1925

Platinum open faced minute repeater by Cartier
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A very fine, thin and elegant French platinum open faced minute repeating keyless lever dress watch, made in the 1920s. Rhodium plated movement, 31 jewels, straight-line lever escapement, cut bimetallic compensation balance, blued steel flat balance spring, index regulator, repeating on gongs activated by a slide on the band. Frosted silver dial with large champlevé Arabic numerals, outer minute track, subsidiary seconds and original blued steel Breguet hands.  Plain case. Dial signed, case and movement numbered.
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Diameter: 49 mm
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Signed: Cartier