US Navy SEAL Team Ten ST10 NSW Troop Insignia SOF Command Unit Challenge Coin. The item “US Navy SEAL Team Ten ST10 NSW Troop Insignia SOF Command Unit Challenge Coin” is in sale since Thursday, November 22, 2018. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “firstordersales” and is located in Fairfax, Virginia. This item can be shipped to United States.