VACHERON & CONSTANTIN, Genève Gusset chronograph and half-stopwatch in yellow gold (750). Back cover in three-tone gold (750). Signed white enamelled dial, black painted hour-markers, Roman numerals for the hours, railway and Arabic numerals for the minutes. Second hand at 6 o'clock. Hand-wound mechanical movement, unsigned. Dust cover signed and numbered 173249. Gross weight: 128 g. - Diameter: 53 mm. Some scratches from use, movement blocked.