A discovery in an Uncirculated Mint set shows that the dollar coin appears to be without the edge lettering that should be a part of the minting process.

Errors increase the value of collectibles because a limited number go into circulation before it is spotted and corrected.

Plus, we explain how to sell rare coins for profit YOU could cash in on thousands of pounds just by sifting through your change if you know which details to look for. Rare minting errors on coins such ...