Amazing 2.5 US Navy Military CPO Seals Challenge Coin USS Murphys Mess 06.28.05! The item “USS Michael Murphy DDG 112 Navy Chief Challenge coin CPO mess” is in sale since Sunday, August 5, 2018. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “bookolector11″ and is located in Silverdale, Washington. This item can be shipped to United States.