Metal Challenge Coin is a kind of metal coin or commemorative medal with the logo and slogan of the organization and is held by the members of the organization. The tradition is to identify the enemy and to boost morale when the organization encounters challenges. In addition, soldiers also like to collect Metal Challenge Coin.

Metal Challenge Coins are usually awarded by unit commanders to unit members who have made achievements. At the same time, the exchange of visits between units is a mutual gift.

Metal Challenge Coin is not currency, and most of the cost should not be too expensive to make and give away. This will not violate the federal government's anti-bribery regulations that various gifts and souvenirs cannot exceed $20 a single time.

Around 2010, a typical Metal Challenge Coin made in Asia cost US$2.5-7. But there are also hand-carved versions for $50-300. In order to improve competitiveness, most of the North American Metal Challenge Coin producers adopt an offshore production model, which means outsourcing to cheaper regions, such as South Korea. And there will be more and more Metal Challenge Coins made in China.

Since many people like to collect, the Metal Challenge Coin collection box is also a must-have for players.