The United States Mint has used a variety of facilities since it was founded in 1792.  A lot of coins that do not have mintmarks were minted by the Philidelphia mint. Between 1965 and 1967, no mint marks were used.

MarkFacilityDates (AD)
CCharlotte Mint
Charlotte, NC
1838 - 1861
CCCarson City Mint
Carson City, NV
1870 - 1893
DDenver Mint
Denver, CO
1906 - Present
DDahlonega Mint
Dahlonega, GA
1838 - 1861
ONew Orleans Mint
New Orleans, LA
1838 - 1861
1879-1909
PPhilidelphia Mint
Philidelphia, PA
1792 - Present
SSan Francisco Mint
San Francisco, CA
1854 - Present
WWest Point Mint
West Point, NY
1983 - Present

Designer / Engraver Marks on the United States Coins

MarkDesignerCoins
AMAlfred Maletsky2004 Nickel, Statehood Quarters
CLVCharles L. VickersStatehood Quarters
DEDon EverhartStatehood Quarters, 2005 Nickel, Presidential Dollars
DRWDennis R. WilliamsBicentennial Dollar
DWDonna Weaver2005 Nickel
EZSEdgar Z. SteeverStatehood Quarters
FGFrank GasparroEisenhower Dollar, Susan B. Anthony Dollar, Lincoln Cent, Kennedy Half Dollar
FSFelix SchlagJefferson Nickel
JFJoe Fitzgerald2005 Nickel
JIJoel Iskowitz2009 Lincoln Cent, Presidential Dollars, Statehood Quarters
JLJim LicaretzPresidential Dollars, 2009 Lincoln Cent
JLAJack L. AhrBicentennial Quarter
JFMJoseph F. MennaStatehood Quarters, Presidential Dollars, 2010 Lincoln Cent
JMJohn MercantiSilver Eagle, Statehood Quarters
JNFJamie N. Franki2005/2006 Nickel
JSJohn R. SinnockRoosevelt Dime
NENNorman E. Nemeth2004/2005 Nickels
PHPheobe HemphillOK Statehood Quarter, Presidential Dollars
RMRichard Masters2011 Sacagawea Dollar
SGSusan GamblePresidential Dollars
SGHSeth G. HuntingtonBicentennial Half Dollar
TcThomas Cleveland2010 Sacagawea Dollar
TDRThomas D. RogersSacagawea Dollar, Statehood Quarters
TJFT. James FerrellStatehood Quarters
VDBVictor David BrennerLincoln Cent
WCWilliam CousinsStatehood Quarters

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