Yellow gold (750) collar watch. Back cover centered with an unnumbered cartouche within a radiating frame of foliate scrolls, numbered 53991. White enamelled dial, black painted hour-markers, Arabic numerals for the hours, railway for the minutes. Hand-wound mechanical movement. Gold dust cover (750) numbered 53991. Horse head hallmark. Second half of the 19th century. Gross weight: 17.3 g. - Diameter: 28 mm. Wear, scratches from use, folding and deformation of the dust cover, oxidation on the hands.