Seal Team 8 Challenge Coin Set. The item “Seal Team 8 Challenge Coin Set. Navy Chief. Cards” is in sale since Monday, August 16, 2021. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “toquishop” and is located in Bronx, New York. This item can be shipped to United States.