One of the most popular is through collecting challenge coins. Challenge coins are signs of unity among die-hard riders, often intended to symbolize loyalty and shared experience within motorcycle ...

A set of challenge coins minted by the state of Montana — and designed by a Montana State University student — are intended ...

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But the other thing is it’s a little more than a thank you,” said the physician who’s carrying on the tradition of challenge coins. “I was very appreciative, but I thought about it that. Why am I the ...