The earliest Carson City silver dollar is the 1870-CC Seated Liberty dollar.
carson city
The Carson City, Nevada mint produced Morgan Silver Dollars during the following years 1878,1879,1880,1881,1882,1883,1884,1885,1889,1890,1891,1892,1893.
17 yrs The Carson-City Mint struck 3 different series of "Silver Dollars" from 1870 to 1893, but they were not produced every year. For Morgan dollars 13 were struck. Trade Dollars 6, Seated Liberty dollars 4. So the Carson-City Mint struck dollar coins for 23 years.
There were no silver dollars struck at Carson City in 1887. Any 1887 dollar with a CC mint mark is a counterfeit.
In 1885 the US mint at Carson City, Nevada struck 228,000 silver Morgan Dollars. Dollars were the only coins being struck at Carson City in 1885 although dimes, quarters and half dollars had been minted there in prior years.
US silver half dollars have been minted at Philadelphia, Denver, San Francisco, New Orleans and Carson City.
One group is a subset of the other. "Morgan dollar" refers to the design by George T. Morgan that was issued from 1878 to 1904 and again in 1921. Carson City refers to one of the mints where dollars were struck. The Carson City mint operated from about 1870 to 1893, and it struck Seated Liberty design dollars, Trade dollars, and Morgan design dollars. The Morgan design was also minted at Philadelphia, San Francisco, New Orleans, and Denver. So ... a Morgan Carson City dollar is one that was struck between 1878 and 1893 at the Carson City Mint. But not all Morgan dollars were struck at Carson City, and not all dollars struck at Carson City are Morgans. (see Venn diagrams in high school math!)
All denominations of silver coinage; dimes, twenty cent pieces, quarters, half dollars, dollars, trade dollars. The mint in Carson city (CC) operated from 1870 to 1893.
1,136,000 silver dollars were struck at Carson City in 1884. Other circulation mintages for that year: Philadelphia - 14,070,000 New Orleans - 9,730,000 San Francisco - 3,200,000 Philadelphia minted 875 proofs, Carson City made 3, and New Orleans made 1.
Philadelphia, Carson City, and San Francisco
No Morgan dollars were struck at the Carson-City Mint in 1886, 1887 or 1888. Any coins with these dates and "CC" mintmarks are fake.
The Carson City Mint made Seated Liberty dollars, Morgan dollars, and Trade dollars during the period 1870-1893. Please post a new question with enough details to identify your coin - in particular the date and designs.