Manufacturing errors might be annoying when it comes to most products, but they can be a massive moneymaker when it comes to collectible money. Errors increase the value of collectibles because a ...

A modern classic': What's so special about the 2000 $1 mule? Errors on coins can help increase their face value, especially if there was a low mintage of the mistake. There's no exact number on the ...

Although no sales of these coins have been recorded yet, he estimated their value to be upwards of £500, potentially exceeding £1,000 for eager collectors. He concluded: "Errors like this are ...

A coin expert has sent out an alert to Brits advising them to sift through their change, highlighting that any £2 coins with a rare error could be valued at more ...