United States Navy Special Warfare. Condition: Used, and in nice shape. The coin is 2 1/2 inches in diameter with epoxy on both sides. 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 SEAL Team Ten / 10 Troops Navy Challenge Coin Circa2018″ is in sale since Sunday, January 13, 2019. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “rolyat11″ and is located in Panama City, Florida. This item can be shipped worldwide.