AN ENAMEL AND SILVER-GILT PRISM CLOCK, CARTIER

Details
AN ENAMEL AND SILVER-GILT PRISM CLOCK, CARTIER
The rectangular white-colored dial with blue enamel abstract and Arabic chapters and blued-steel hands revealed through a glass window by an encased prism, within a silver-gilt geometric case applied with sections of mottled blue and black enamel simulating jasper--4 1/8 x 3½ x 3¼ ins.
Signed by Cartier, No. 91180122