Yellow gold (750) collar watch, back cover engraved with RS under a crown. White enameled dial, hour markers with Arabic numerals, black painted minute track. Hand-wound mechanical movement. Inner case engraved "May 18, 1911" and numbered 11258. Yellow gold (750) dust cover engraved "Charles Oudin, Horloger de la Marine, 17 Avenue de l'Opéra, Paris" and numbered 33888. Gross weight: 19.5 g. - Diameter: 29 mm. Glass to be refastened, minor wear scratches. With its yellow gold (750) filigree shuttle link watch chain, yellow gold (750) and silver (800) snap hook. Net weight: 21.6 g. - Length: 76 cm.