Cartier, a lady's Retro gold and diamond wristwatch, mid 20th century, the circular white enamel

Cartier, a lady's Retro gold and diamond wristwatch, mid 20th century, the circular white enamel dial with Roman numeral indicators and blue steel hands, within a border of brilliant-cut diamonds, to an integrated gold bracelet of stylised foliate links in polished gold, set with a central row of brilliant-cut diamonds, case width 1.9cm including diamond border, bracelet length 17.5cm, manual winding movement, signed Cartier, numbered 1873, faint French assay marks for 18ct gold and platinum, fitted case stamped Cartier