Vintage Longines Military Pilot’s Watch, Swiss Made, Cal. 12.68N from 1940'sThe Longines Calibre 12. 68N wristwatch was introduced in 1939, at the outset of World War II, and quickly became one of the brands most enduring military timepieces. Produced in Switzerland and also assembled in the U. S. using Swiss made components, this model was issued to U. S. Navy pilots and Royal Air Force (RAF) personnel, making it a historically significant pilots watch. This example features a 32. 5mm stainless steel case with long, beveled