This is an extremely rare piece—a 1919 Elgin wristwatch made for the American military with a highly valuable depolier waterproof case and a black porcelain dial. This watch is an extraordinary find, as it utilizes a unique depolier waterproof case design featuring screw-down bezel, case back, and crown—a rarity for the 1910s. The unfading black porcelain dial has minute markers in a star-shaped pattern, giving it a distinctive presence, combined with the exceptional depolier waterproof case.
The movement inside is beautifully finished with chatons (jewel settings) on the main plate, and it features special features like a fine adjustment mechanism and the use of 15 jewels. It's a high-grade specification timepiece.