1940s Longines Cal.13zn Ref.5415 "Lip" 37mm Water-resistant Fly-back Chronograph

This is a mid-1940s Longines Ref. 5415 "Lip" 37mm Snapback Waterproof Case Flyback Chronograph with Silver Luminous Dial with the famous Longines Cal. 13zn. It has a 37mm snap-back waterproof case with a distinctive back cover called a lip, which differs from that of the Tre-tacche. The silver dial with uniformly aged luminescence from those days is exquisitely matched with the snap-back waterproof case that exceeds 37mm, and is a gem that fascinates with the wonderful taste that only good old Longines can offer. The Longines in-house caliber chronograph is a perfectly established masterpiece in the history of watchmaking and will continue to be appreciated and handed down in the future. 13zn waterproof chronographs are more affordable than those of the Mashroom and Tre-tacche.