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As in 1863, the Philadelphia Mint struck only enough dimes to pay off bullion depositors in coin and to meet miscellaneous expenses. There is only a modest spread in value from low grades to Mint State, as few of these coins circulated. Most survivors are Mint State or close to it.
Two die pairs were used for 1864(P). Oddly enough, each pair coined both proofs and currency pieces. Many of the latter are somewhat prooflike or satiny. The example illustrated reveals strong die clashing, especially on its reverse.