This exquisite Navy NPS Nuclear Power School Mare Island Ship Yard MINSY Challenge Coin is a must-have for any collector of militaria and challenge coins. With intricate details and a classic design, this coin is an original item that belongs in any collection. Whether you're a current or former member of the military, a history buff, or simply a lover of unique and rare finds, this collectible is sure to impress. Add it to your collection today and proudly display it for all to see.   1.5"