Large 2.5 challenge coin is beautifully made with enamel and is nickel plated. We are the only source of this collectible challenge coin and we also offer collectible Space Force Uniform pins, Chief Master Sergeant rank insignia patches for the Senior Enlisted Advisor of the United States Space Force and Command Senior Enlisted Leader of United States Space Command, and other space related collectibles and display stands sold separately. Buy with honor from our company located in America.