1879

Production of 207,630 pieces at the Philadelphia Mint placed this issue squarely between the comparatively heavy 1878 output of 543,645 coins and the precipitous 1880 figure of just 51,456, a year-over-year collapse of roughly 75 percent that signals how quickly Treasury demand for Eagle-denomination coinage shifted once Specie Resumption stabilized circulating gold. January 1, 1879 marked the first day since the suspension of 1861 that paper currency exchanged at par for gold at the Treasury window, and Philadelphia's coining presses were calibrated to meet anticipated commercial draw rather than the export-driven runs that San Francisco continued to handle. A separate proof coinage of 30 pieces accompanied the regular delivery.

Among Type 3 Philadelphia issues bearing the spelled-out TWENTY DOLLARS reverse adopted in 1877, this date sits in a transitional cluster that grows decisively scarcer beginning in 1881. PCGS CoinFacts ranks the issue in rarity alongside the 1855 through 1858 Philadelphia dates and the 1863, 1864, 1869, 1870, and 1880, all of which become formidable in strict mint state. Survivor distribution skews heavily toward circulated grades, with the bulk of certified examples falling in the VF to AU range. Choice and gem uncirculated coins are genuinely rare, and meaningful PCGS or NGC populations evaporate above MS62 as collectors and dealers consistently report difficulty assembling matched sets in higher grades.

Strike quality on Philadelphia Type 3 coins of this period is generally above the standard set by branch-mint contemporaries, with hair detail above Liberty's ear and stars near the rim usually crisp on average examples, though softness across the eagle's shield lines does appear on later die states. Surfaces tend toward satiny rather than frosty luster, a Philadelphia hallmark for the 1877 to 1880 window. Heavy bag marks across the obverse fields are typical given that these coins were stored and shipped in mint bags before any meaningful collector demand existed for the denomination. Broader production, distribution, and design context appears in our Liberty Head Double Eagle series history.