This USN Octopus CPO Challenge Coin is a genuine piece of militaria, featuring the iconic symbol of the Chiefs Mess at Kings Bay Submarine Base. Each coin is serialized, making it a unique addition to any collection. The coin is an original item, manufactured between 2001 and now, and has not been modified in any way. It is a must-have for any collector of challenge coins or militaria enthusiast. Add this piece to your collection today. (Light Rub on Hat) see pics.