The Office Of Defense Cooperation Yerevan Armenia Military challenge coin is a 50mm original item that falls under the theme of Militaria. It is a unique collectible that showcases the history and significance of the Office of Defense Cooperation in Armenia. This challenge coin serves as a symbol of recognition and appreciation for the military personnel who have served or are currently serving in the Defense Forces of Armenia. It is a valuable piece for collectors and military enthusiasts alike. 4mm thick