Naval Special Warfare Group One. Navy SEAL Teams 1, 3, 5, & 7. Condition: Used, and in nice shape. It is 1 3/4 inches in diameter. Naval Special Warfare Group 1: SEAL Teams 1, 3, 5, 7. 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 “Commander Naval Special Warfare Group One Navy SEAL Teams 1/3/5/7 Challenge Coin” is in sale since Saturday, January 07, 2017. 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.