The 7″x5″Massive USN Challenge Coin is a collectible item featuring a Shellback Certificate design, perfect for military enthusiasts and collectors. This original, authentic coin represents the US Navy and is a unique piece of militaria memorabilia. The challenge coin is a symbol of honor and pride for those who have served in the Navy, making it a valuable and sought-after item for military personnel and enthusiasts alike. This is the original Shellback coin before all the remakes out there came out…..