US Navy Special Operations Command Oceanography Challenge Coin. US Navy Special Operations Command Oceanography Challenge Coin US Navy Special Operations Command Oceanography Challenge Coin US Navy Special Operations Command Oceanography Challenge Coin BACK. US Navy Special Operations Command Oceanography Challenge Coin BACK. Sorry, our items are NOT available for pick-up. No additional information at this time. You might also like. 2 Antique silver coin display stand. US Embassy Defense Attache Office Finland. USAF 99th POL flight Nellis USAF Spinner coins. Knights of Columbus GWOT Christian Knights Afghanistan Alumni Unique Sword and S. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “phoenixchallengecoins” and is located in this country: US. This item can be shipped worldwide.