US NAVY Seal Team XVII 17 Chiefs Mess Coin Bull Trident Skull RARE Serial #029. The item “US NAVY Seal Team XVII 17 Chiefs Mess Coin Bull Trident Skull RARE Serial #029″ is in sale since Thursday, September 2, 2021. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “vr6tvital” and is located in Fernley, Nevada. This item can be shipped to United States.