For sale is a NSWG-10 West Navy Chief (CPO) Challenge Coin. It is shaped like a black flask with a top that opens up. There are absolutely zero blemishes on this coin. The chrome has a beautiful rich shine to it. The coin measures approximately 4 1/4″ x 3″. When they do pop up. Obviously these are highly desired. Message me if you have any questions. The item “NSWG-10 West CPO Chief Navy Challenge Coin Black Flask withtop that opens” is in sale since Wednesday, October 24, 2018. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Challenge Coins”. The seller is “gta_gtp” and is located in Camarillo, California. This item can be shipped worldwide.