Proof coins are very special works of art, struck with highly polished dies that are prepared carefully prior to striking. Every Proof coin is struck at least twice. The second strike deepens the relief and gives the coin more definition. Strikes on Proof coins use less pressure than our standard minting process, and the dies are used less often, which helps to preserve the fine detail of the Proof coin. With all that attention to detail, you can be sure that our Proof coins are beautifully crafted and a joy to own.