7,500+ challenge coins. One collector community.
Browse military, law enforcement, and first responder challenge coins uploaded by collectors worldwide. Vote on monthly themed contests, prove authenticity with Smart Coin® NFC, and showcase your own collection.
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BY GRAY WATER OPS
Need a custom challenge coin?
We've minted coins for military units, law enforcement departments, nonprofits, and businesses for over a decade. From bulk custom coins to patented Smart Coin® NFC coins, Gray Water Ops handles design, mint, and delivery.