Fine French gold chronograph watch with registers Circa 1920

Gold chronograph by Cartier
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A fine slim french yellow gold and enamel hunting cased keyless chronograph watch with registers, circa 1920. Manual winding jewelled lever movement.
Silvered dial, painted Roman numerals, outer Arabic minute ring with 1/5 seconds divisions, subsidiary dials for 30 minute register and constant seconds, yellow gold case, central crest and coronet in blue enamel to front, coin edged band, single chronograph button to the band, snap on back, dial and movement signed, case back and bezel numbered 5831 and 1822, case numbered 5831, 3892 and 1822.
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Diameter: 50.5 mm
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Signed: Cartier
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The enamel crest to the case is of the Egerton family beneath the coronet of the Earl of Wilton. Taking into consideration the age of the watch, it might be fair for one to assume that the watch belonged either to Seymour Edward Frederick Egerton, the 6th Earl of Wilton (1896-1927) or his wife, Brenda, Countess of Wilton (1895-1930).