Platinum & Diamonds Wrist Chronometer no. -

Case: s/n; ?, Platinum & Diamonds Dial: Silvered dial, time only, hours and minutes Movement: s/n; ? , L-shape baguette caliber, typical Niton's design. Inscription; Niton, Geneve, Caldwell ?, Eighteen 18 jewels, All adjustments, Swiss, Poincon de Geneve quality seal. Provenance: 1931 - Niton, Geneve 1931 - Caldwell, still validating 2023 - Louis Briscou (Instagram Member)