This is an antique watch with the famous caliber 9L, which is the basis for all other Longines internal movements. Since this watch is pre-World War II, it contains 17 original rubies, not synthetic ones like in modern watches. All in a full gold cabochon. The movement still contains other gold parts. The watch is 14k gold plated, scratch free, the dial is in excellent condition the dial has been revised again. Fully serviced with a new strap. See Longines authentication. Mechanism Operation mode Manual winding Case type Case type Gold/Steel Diameter 29 x 41 mm Try watch Frame material Gold/Steel Glass window