Born of the Comstock Lode
The discovery of the Comstock Lode — one of the richest silver deposits in world history — in western Nevada in 1859 transformed American mining, finance, and coinage. The massive flow of silver from the Comstock created an urgent need for a local mint facility to convert raw silver (and gold, which was also present in the Lode) into US coinage without the expense and risk of shipping it across the continent to Philadelphia or San Francisco.
After years of lobbying by Nevada's political delegation, Congress authorized the Carson City Mint in 1863, during the Civil War. Construction of the imposing sandstone building began in 1866, and the mint opened for coinage production on February 11, 1870. Located at the base of the Sierra Nevada mountains in Nevada's capital city, the Carson City Mint was perfectly positioned to process Comstock silver and serve the commercial needs of the rapidly growing mining communities of the American West.
Operations and Production
The Carson City Mint operated as a coinage facility from 1870 to 1893, with a brief closure from 1885 to 1889 during a period of reduced silver output. During its active years, Carson City produced coins across multiple denominations:
- Silver — Seated Liberty and Morgan dollars, Seated Liberty and Barber half dollars, quarters, dimes, and twenty-cent pieces
- Gold — Double eagles ($20), eagles ($10), half eagles ($5), quarter eagles ($2.50), and gold dollars
- Trade dollars — Struck for Asian commerce during the 1870s
Total Carson City production was modest by US Mint standards — approximately $50 million in face value over 23 years of operation. Annual production varied dramatically, from a few thousand coins in some denominations to several million Morgan dollars in peak years. This relatively low and inconsistent output is the primary reason Carson City coins are scarce and valuable today.
The mint employed approximately 40–60 workers during active periods and used steam-powered coining presses. Quality control was sometimes uneven — Carson City coins are often noted for softer strikes compared to Philadelphia production, a characteristic that collectors accept as part of the CC mint's character.
The CC Mint Mark: Most Collected in American Numismatics
The "CC" mint mark is arguably the most sought-after mark in US coin collecting. No other mint mark carries the same combination of scarcity, romantic historical association, and broad collector appeal. The CC mark evokes images of the Wild West, silver mining boomtowns, frontier commerce, and a brief but fascinating chapter of American history.
Key CC-mint coins that collectors pursue:
- 1889-CC Morgan dollar — Mintage of only 350,000, making it the key date of the CC Morgan series. Worth $500+ even in Good condition, $50,000+ in gem Mint State.
- 1876-CC twenty-cent piece — Only 10,000 struck of this short-lived denomination. A major rarity worth $5,000+ in any grade.
- CC-mint Seated Liberty coinage — Many dates have mintages under 10,000, making them significant rarities. CC Seated Liberty dollars, half dollars, and quarters from the early 1870s are particularly scarce.
- CC-mint gold coins — Double eagles, eagles, and half eagles from Carson City are avidly collected. The 1870-CC double eagle (3,789 minted) is one of the great American gold rarities.
Even common-date CC Morgan dollars command premiums of 50–200% above their Philadelphia or San Francisco counterparts, purely because of the CC mint mark's desirability. This "CC premium" has been a consistent feature of the coin market for decades.
The GSA Hoard
One of the most dramatic events in modern numismatic history involved Carson City Morgan dollars. In the 1960s and 1970s, the General Services Administration (GSA) discovered that government vaults still held approximately 2.9 million uncirculated Morgan dollars, a significant portion of which bore the CC mint mark. Congress authorized the GSA to sell these coins to the public through a series of mail-bid sales held from 1972 to 1980.
GSA Carson City dollars were sold in distinctive hard plastic holders with a black display box and a certificate of authenticity. These "GSA dollars" became one of the most popular collecting categories in American numismatics. The GSA sales introduced thousands of new people to coin collecting and created a dedicated collecting specialty that remains active today. GSA-holder CC dollars typically command premiums above the same coins in standard holders.
Closure and Preservation
The Carson City Mint ceased coinage operations in 1893 as Comstock Lode production declined. The building continued to serve as a US Assay Office until 1933, testing and valuing precious metals. The State of Nevada acquired the building in 1941, and after extensive renovation, it reopened in 1991 as the Nevada State Museum. The museum houses an outstanding numismatic collection, including a working coin press that visitors can operate to strike souvenir medals — one of the most popular attractions in Carson City.
Up Next
San Francisco & Denver Mints — the western mints that shaped modern American coinage.
This guide is for educational purposes. Where official standards, grading services, organization memberships, or legal requirements apply, consult the primary authority named in the references below or the relevant government agency.
Reviewed on February 27, 2026 by the US Coin Shows editorial team. Editorial policy
Frequently Asked Questions
Why are Carson City coins so collectible?
Carson City operated for only 23 years (1870–1893) with modest production, making most CC coins scarce. The romantic Old West history and distinctive CC mint mark create strong collector demand and premiums.
What is the GSA hoard?
In the 1970s, the General Services Administration sold ~2.9 million Morgan dollars from Treasury vaults, many from Carson City, in special GSA holders. These coins carry premiums and are actively collected.
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