Naval Special Warfare Group Two. Logistics and Support Unit. Condition: Used, and in good shape. It is 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 Group Two SEALs Log & Sup Navy Seabees / CB Challenge Coin” is in sale since Wednesday, May 03, 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.