Iwakuni Japan Friendship Day. S Naval Hospital Rota Spain. S PACOM Armed Services Blood Bank. 121st Hospital Corpsman Birthday. S Naval Hospital Yokosuka Japan. S Naval Hospital Sigonella Spain. The item “6 U. S. Navy Challenge Coins Bundle” is in sale since Sunday, July 28, 2019. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “j681998″ and is located in FPO, Armed Forces Pacific. This item can be shipped to United States, Canada, Mexico.