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These coins are supposed to be in circulation but I've only found a few dimes and for nickels. I did get a roll of dimes from the bank but nothing else. I haven't found even one quarter in circulation. At the Philadelphia Mint they have a change machine and allow you to buy a maximum of $5 in quarters at face value. Collectors can buy rolls, proof and mint sets from the mint but their prices are a rip off: https://www.usmint.gov/