Silver marine chronometre with wind indicator by Longines, 65mm diameter, serial number 2977979, circa 1912 bearing U.S. Navy markings N 4462 on back. .800 silver case and curvette with navy markings on case back. Metallic dial with Roman numerals, minute ring, large subsidiary constant seconds register and wind indicator. 17 jewel 5 adjustment Swiss movement by Longines.