Yellow gold collar watch (750). Blue enamelled back cover on a radiating guilloche background, centered with a flake set with small rose-cut diamonds in a grain setting. Dial with gilt background, Arabic numerals for the hours, railway for the minutes. Mechanical hand-wound spiral movement. Yellow gold (750) dust cover. Gross weight : 19 g. - Diameter: 28 mm. Some enamel damages, scratches.