United States Naval Special Warfare. Condition: Used, but in good shape. The coin is 1 5/8 inches in diameter. To view miscellaneous challenge coins. NOTE: Never personally given any of the coins. All coins are guaranteed to be in excellent condition unless specified above. The free listing tool. The item “Naval Special Warfare Three or SEAL Team 3 Brass Navy Challenge Coin” is in sale since Wednesday, April 16, 2014. This item is in the category “Collectibles\Militaria\1992-2001\Original Period Items”. The seller is “rolyat11″ and is located in Panama City, Florida. This item can be shipped worldwide.