Navy CPO Chief Challenge Coin OKTOBERFEST boot drink mug can RARE non nypd msg. The item “Navy CPO Chief Challenge Coin OKTOBERFEST boot drink mug can RARE non nypd msg” is in sale since Saturday, February 2, 2019. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “allcoin_48″ and is located in Covina, California. This item can be shipped to United States.