US Navy Seal Team Seventeen AOB 1310 Mazar E. Very hard to come by Seal Team Seventeen. AOB 1310 Mazar E. If you are a challenge coin collector this is a must have coin for your collection. Pleease check my other listings for some more great coins. I will continue to post in the future with more coins. The item “US Navy Seal Team Seventeen OEF AOB 1310 Mazar E-Sharif Challenge Coin” is in sale since Tuesday, January 7, 2020. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “itsmekurtr” and is located in United States. This item can be shipped to United States.