1940s Arva Val-71/24h Stainless Steel 37mm Water-Resistant Chronograph Rare 24-Hour Watch

Arva, Valjoux 71/24h, very rare 24 hour watch,water-resistant chronograph, stainless steel, 37mm dial size, circa 1940s. Cal. 71/24h powered, a modified version of the rare Valjoux 71, is mounted on this watch. The unique two-tone dial design with a large 6 o'clock in-dial layout gives the watch a wonderfully vintage brown color, and the rare three-piece heavy construction of the snapback water-resistant case makes this an unparalleled 24-hour watch This is a valuable piece in the history of chronographs, as it predates Breitling's Cosmonaut from the 1960s by some 20 years.