Errors increase the value of collectibles because a limited number go into circulation before it is spotted and corrected.
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Big bucks for 25 cents – a 1999 state quarter could be worth $10K because of manufacturing errors
Some 1999 Georgia quarters that were mistakenly struck on experimental planchets have sold for extremely high prices, ...
Wrong planchet errors represent some of the most dramatic minting mistakes possible. Wrong planchet and off-metal errors occur when a correctly made blank from one denomination is accidentaly fed into ...
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