Clarté, an Art Deco lacquer and silver travel clock, 1920s, the silvered dial with Arabic numeral

Clarté, an Art Deco lacquer and silver travel clock, 1920s, the silvered dial with Arabic numeral indicators and blue steel hands, within a rectangular base metal case applied with black lacquer, with a hinged lid opening to reveal a winder, measuring 4.6 x 3.5 x 0.9cm, British import hallmarks for silver, manual winding movement, numbered 598