WALTHAM Yellow gold (750) round neck watch, cover, case and bezel enamelled blue and white fillets on a wavy and radiating guilloche background, the cover centered with an old-cut diamond in closed setting. Dial with cream background, signed, Arabic numerals painted in black for the hours, and rails for the minutes. Hand-wound mechanical movement, signed Walthamn Patririan and numbered 18028402. Winding crown adorned with a sapphire cabochon. Lid numbered 940 on the inside. Held in place by a blue enameled hoop and stick motif and a yellow gold (585) chain with forçat and elongated links, alternating with enameled stick motifs in succession. Clasp ring spring. Circa 1910. Gross weight : 22,5 g. Case diameter: 27 mm. - Length of chain: 56 cm. - Length of pendant: 9 cm. Small chips and missing enamel, slight oxidation and stains on the dial, small scratches from use.