AUTHENTIC Military Challenge Coin. Bought a large personal collection from a retired Navy Admiral and will be listing them over the next few days. The item “Very Shallow Water Mine Countermeasures DET EOD Navy Challenge Coin RECON SEAL” is in sale since Thursday, December 28, 2017. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “challengecointrader” and is located in Cameron, North Carolina. This item can be shipped to United States.