A vintage 18ct gold Eberhard Extra-Fort single button chronograph wristwatch with Stop/Start/Lock device, ref. 14007, with matte dial, applied markers, 2 registers for seconds and minutes, outer tachymeter track, Dauphine hands, top pusher starts, stops, and resets the chronograph, lower pusher works as a stop and lock mechanism activated by sliding it upwards, hand wind movement, case no. 304, size 39 mm, leather band, C - 1950, fine condition.