1871-CC 10C XF45 认证号90092392, PCGS号4654

Mintage: 20,100
Obverse Dies: 1 Known

All Carson City dimes from 1871 through 1874 are found with wider reeding than coinage from the Philadelphia or San Francisco mints. Additionally, only one reverse die was used to strike the Carson City mintage for those four years. Both of these characteristics can be used as a diagnostic to verify genuine Carson City dimes from 1871 through 1874. Carson City dimes are typically found with surface porosity as many have been recovered from the ground. Larry Briggs also notes in his Comprehensive Encyclopedia of United States Liberty Seated Quarters that "The Carson City mint was known to shortcut their annealing process and instead of using 90% silver, 10% copper mixture, used pure Comstock silver."
Without copper in the alloy to harden the silver, Carson City dimes would be highly susceptible to environmental factors.

Plate Coin: Fortin 101, Original Gunmetal Gray Toning with Problem Free Surfaces For An 1871 Carson City Dime, One of the Highlights of the Fortin PCGS Registry Set

Ron Guth

The 1871-CC Dime is one of the stars of the Carson City coins, primarily because of its inherent rarity and the paucity of Mint State examples.  After some confusion about crossovers, resubmissions, etc. a clear picture has emerged of the members of the Mint State "club" and it shows that there are, at best, five Uncirculated 1871-CC Dimes.  The best is the NGC MS65 from the Eugene Gardner Collection that sold recently for a record price of $270,250.  Check out the Condition Census above for the most accurate listing ever presented for this date.