Marine Special Operations Command. Marine / Navy Challenge Coin. Condition : Used and in good condition. This coin is 2 3/8 x 3 inches. Never personally given any of the coins. All coins are guaranteed to be in excellent condition unless otherwise specified above. The free listing tool. The item “Special Operations Command Raider Chiefs #100 MARSOC Marine Navy Challenge Coin” is in sale since Thursday, May 26, 2016. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “rolyat11″ and is located in Panama City, Florida. This item can be shipped worldwide.