Naval Special Warfare Group Two. Condition: Used, and in good shape. It is 2 inches wide by 3 inches high with serial #192. 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 Group Two Naked Warrior Navy SEAL Challenge Coin / 2″ is in sale since Sunday, November 10, 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.