An Art Deco diamond wristwatch, 1920s, the rectangular-shaped engine-turning silver dial with Arabic numerals and blued steel hands, within a pierced diamond-set bezel of crosshatch motif, to the engraved sides and crown, with beige grosgrain strap and engraved clasp, backwind movement, crown and clasp possibly associated, diamonds approximately 0.50 carat total, mounted in platinum, adjustable strap