LONGINES MEDICAL CHRONOGRAPH, GOLD, WITH ARCHIVE EXTRACT, SWISS 1926 54 mm diameter yellow gold case, 18K hallmark, serial number 4222503 white enamel dial with Arabic numerals for the hours, pulsometric scale in red for chronometry, movement cal 19.73N. Watch currently in working order, with archive extract. Weight 97 g. LONGINES, AN 18K MEDICAL CHRONOGRAPH, WITH ARCHIVE EXTRACT, SWITZERLAND 1926