Vacheron & Constantin. An 18K gold manual wind concealed 20 dollar coin watch Ref: 4928, Circa 1970

Vacheron & Constantin. An 18K gold manual wind concealed 20 dollar coin watch Reference: 4928 Date: Circa 1970 Movement: 17-jewel Cal.1003 manual wind, adjusted to heat, cold, isochronism and 5 positions, No.578280 Dial: Champagne, black baton hour markers, black pointed baton hands Case: Brushed and polished inner hinged case with snap on back, outer case in the form of a United States of America 20 dollar coin dated 1885, winding crown at 1, hinged front opened via push button in milled band at 3, No.396078 Signed: Case, dial & movement Size: 34mm Accompaniments: Vacheron Constantin box (AF), insurance valuation dated 1983 Footnotes: Coin watches were first produced in the 1920s, and rose in popularity throughout the 20th century. During the 1920s, watches were incorporated into daily objects such as cigarette cases, lighters and lipstick holders. Makers such as Cartier, Rolex, Patek Philippe, Piaget and Vacheron Constantin have produced coin watches. Real coins are utilised, with some examples with fitted lugs added on to be worn on the wrist. For further information on this lot please visit Bonhams.com