A 'Sterling' model Ingersoll watch in a silver case by the Dennison Watch Case Co, hallmarked for 1915. Painted card dial, with subsidiary seconds and inscribed 'Ingersoll, Stirling, parts made in U.S.A. assembled in England.' The dial's original numerals have been overlaid with black cartouches, and numbers painted in a radium based luminous paint. Steel full-plate movement with lever escapement. Stamped on the movement with the makers name and New York Patent numbers for 1901, 1907, 1912 and 1914. 'Sterling' watch by Ingersoll converted for use on the wrist 1912-1918