At Rosland we also offer proof coins, that is the highest quality of coins a mint produces. They have a much higher value than the metal itself, because they are special early samples of a coin issue.
Historically they were made for checking the dies and for archival purposes and therefore proof coins are struck using hand-finished dies.
This means an expert will etch into the metal die to produce a mirror image imprint, ready for a machine to stamp a blank coin disc. The decision to hand-finish the dies means that there will be no imperfections before a coin is produced.
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