Challenge coins, with roots deeply embedded in military culture, have a storied history dating back to World War I. Initially used to validate membership in a military unit, these coins evolved into symbolic tokens of camaraderie and shared experiences among soldiers. The tradition expanded beyond the military, with various organizations adopting challenge coins to foster a sense of belonging and honor. The distinct designs, often featuring unit insignias or emblems, serve as tangible reminders of shared challenges and accomplishments. As a tradition steeped in history, challenge coins have become cherished artifacts that transcend their original purpose, uniting individuals through a tangible link to the past.