The Knowledge Base
History, collecting guides, traditions, and everything you need to know about challenge coins.
From a WWI flying squadron to the Oval Office, the challenge coin has one of the most fascinating origin stories in military tradition. Discover how a small bronze medallion became a symbol of honour and brotherhood carried by soldiers, presidents, and collectors worldwide.
Building a meaningful challenge coin collection takes more than buying whatever catches your eye. Whether you're a veteran with a box of unit coins or a civilian discovering the hobby, this guide walks you through defining your focus, sourcing authentic coins, storing them properly, and connecting with the community.
The coin check is one of the most storied traditions in military and collector culture - a ritual that turns a simple medallion into a social bond and a round of drinks. Learn the official rules, variations across different branches and units, and the etiquette that keeps the tradition alive and respected.
A coin from the President of the United States is considered one of the highest civilian honours a person can receive. But what makes presidential challenge coins so special? How did each commander-in-chief put their own mark on the tradition? And what should collectors know before trying to acquire one?
What separates a $15 souvenir from a coin worth hundreds - or thousands? Presidential coins, Special Operations issues, WWII-era pieces, and Secret Service coins can command serious prices. A collector's guide to the categories, conditions, and stories that drive challenge coin value.
A challenge coin carelessly left in a drawer costs nothing to acquire but plenty to preserve. From air-tight capsules and PVC-free holders to shadow boxes and humidity control - the right way to protect and display your collection, whether you have five coins or five hundred.
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