Naval Special Warfare Center Navy SEAL Training. Condition: Used, and in nice shape. The coin is 1 5/8 inches in diameter and made with hard backed enamel. It has a serrated edge. If desired, we can print a copy of the letter, and sign the copy. NOTE: Never personally given any of the coins. All coins are guaranteed to be in excellent condition unless specified above. The free listing tool. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “rolyat11″ and is located in this country: US. This item can be shipped worldwide.