15 rare state quarter errors. When compiling the list of the rarest state quarter errors, we considered factors such as mintage mistakes, market value, auction history, and collector demand.

The Wisconsin state quarter has also seen its fair share of errors. In 2006, an investigation revealed that as many as 50,000 coins had an extra cornstalk leaf either pointing down (“Low Leaf ...

Here are some signs that you might have an experimental planchet 1999 Georgia quarter error: Weighs between 5.9 and 6.3 grams on a coin scale, which is more than the 5.67 grams for a typical ...

The Wisconsin state quarter has also seen its fair share of errors. In 2006, an investigation revealed that as many as 50,000 coins had an extra cornstalk leaf either pointing down (“Low Leaf ...

Error coins can net you some extra cash.

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Error coins can net you some extra cash.

Error coins can net you some extra cash.