United States Navy Special Warfare. SEAL Team 10, 3 Troop. Black Version, Circa 2013. Condition: Used, and in good shape. The coin is 2 inches in diameter with epoxy on both sides, Circa 2013. This coin was acquired from a former active ST10 member. 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, 3 Troop Navy Challenge Coin Circa2013″ is in sale since Tuesday, November 17, 2015. 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.