This 2018-P WWI U.S. Navy commemorative proof silver medal has been certified by NGC as PF70 Ultra Cameo. The medal features a modern silver/clad composition and was struck at the Philadelphia Mint. It honors the brave men and women who served in the United States Navy during World War I. The certification number is 4819808-084. This medal is a must-have for any collector of U.S. Navy or World War I memorabilia.