1940s Longines "Stop Second Minutes Recorder" Stainless Steel 37mm Oversize

Longines C.12.68z stop-seconds watch from the 1940s. 37 mm oversized minute recorder with the rare caliber 12.68z, which adds a 60-minute counter to the regular stop-seconds model with a 60-second counter. It is equipped with the rare 12.68z caliber, which adds a 60-minute counter to the regular 60-second stop-second model. The chronograph can be activated at exactly zero to measure time for up to 12 hours. It also has a hack function and a simple flyback function. This is a precious gem that shows the originality of Longines at a time when many manufacturers were creating chronographs by trial and error. This is a rare 37mm oversized model among the many variations of stop-seconds. The back of the watch is engraved.