Proof coins - the pinnacle of the minter's art
Proof coins are struck using special dies that are prepared carefully prior to striking. Each die is used fewer times and between each strike the die is polished and the coin aligned carefully by hand. The process of polishing a Proof die for a Crown can take hours. In addition, Proof coins are struck at least twice, the second strike deepening the relief and firming the definition.
Each strike uses less pressure than our standard minting process in order to preserve more of the fine detail present in the artwork.