A gold hunting cased keyless pocket chronometer, Invicta, No.250018, circa 1910, white enamel dial with Roman numerals, inner and outer 24-hour rings, subsidiary seconds, Louis hands, gilt movement with spring detent escapement, bi-metallic compensation balance, helical balance spring, glazed cuvette, signed and numbered hinged gold cuvette, plain case, diameter 50mm. (47)