A silver chronograph watch with register, Omega circa 1915

frosted gilt lever movement, bi-metallic compensation balance, silver cuvette, signed, white enamel dial, Roman numerals, subsidiary dials for 15-minute register at 12 and constant seconds at 6, circular case with push pendant chronogaph, case, cuvette, dial and movement signed; together with a stainless steel watch made for the U.S. government, Hamilton Watch Company, 1940s, with damascened nickel lever movement, 21 jewels, mono-metallic balance, precision regulator, white enamel dial, Arabic numerals, subsidiary seconds, circular with reeded screw-down bezel and case back, case inscribed, case, dial and movement signed, numbered under the bezel; together with a silver openfaced watch, International Watch Company, circa 1905, with frosted gilt lever movement, bi-metallic compensation balance, precision regulator, white enamel dial, Arabic numerals, subsidiary seconds, embossed case back with inscription, cuvette, dial and movement signed.