eight that are, or have been, a part of the US Mint:

“CC”
Carson City, Nevada
“C”
Charlotte, North Carolina
“D”
Dahlonega, Georgia
“D”
Denver, Colorado (this facility was started long after Dahlonega closed, there is no problem identifying if the coin came from Dahlonega or Denver)
“O”
New Orleans
“P”
Philadelphia (because it was a primary mint used no mintmark for many years)
“S”
San Francisco
“W”
West Point

Coin articles:
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