A gold openface World Time Watch, Cartier, European Watch & Clock Co., Inc., circa 1945

18k, nickel lever movement, bimetallic compensation balance, 19 jewels, 8 adjustments, silvered matte dial, Roman numerals, the revolving inner disc calibrated with the following cities: New York, Chicago, Denver, San Francisco, Paris, London, polished case engraved with monogram heightened by blue enamel, case, dial and movement signed.

For a similar example see Barracca, Nencini, and Negretti, Le Temps de Cartier, p. 198