A silver single-button chronograph physician's wristwatch

细节
A silver single-button chronograph physician's wristwatch
Case: Circular with bar lugs, hinged back numbered 26162, hinged cuvette similarly numbered
Dial: White enamel with Arabic numerals, outer pulsations ring, subsidiary dials for running seconds and elapsed minutes with sweep centre seconds
Movement: Jewelled to the centre with bi-metallic balance
33mm.diam.