Yellow gold (750) collar watch. Back cover with radiating guilloché decoration centered on an unnumbered cartouche. White enameled dial, hour markers with black-painted Roman numerals, Arabic numerals and minute track. Mechanical movement with key winding (without key). Copper dust cover signed Deydier. With yellow gold (750) safety pin and gilt metal spring-ring clasp. Gross weight: 31.9 g - Diameter: 34 mm. Scratches and wear.