Mintage totals show that the Carson Mint produced 864,179 double eagles in 19 different years, making this the most abundant gold denomination from that institution, both in quantity and face value.
Production years for "CC" double eagles ran from 1870 through 1879 and from 1882 to 1893 (no coins minted in 1886, 1887, and 1888). The first-year-issue, 1870, saw the lowest output, with a mere 3,789-piece total. Twenty-one years later, in 1891, The Carson Mint delivered the second lowest quantity of double eagles, with just 5,000 pieces issued. The years 1874 through 1876, peak years on the Comstock Lode, saw the highest double eagle production at the Carson City Mint, with 1876 topping out at 138,441 pieces.
Every Carson City gold coin collector dreams of owning an 1870-CC double eagle, crowned the “Queen of Carson City gold coins.” Rusty Goe estimates that between 55 and 65 1870-CC double eagles survive today.
Goe also estimates that no more than 3.18% of the original mintage of “CC” double eagles is extant, which means at most 27,455 “CC” double eagles, spanning 19 dates, are available to collectors. Goe suggests that this number is probably on the high side and believes the true total is probably 2,000 to 3,000 less.
Besides the 1870-CC, which is in a rarity class by itself, seven other dates in the “CC” double eagle series stand out key issues: 1871, 1872, 1873, 1878, 1879, 1885, and 1891.