Most dates and mints for Lincoln Cents are known for doubled dies and date 1989 and back are known with repunched mint marks referred to as RPMs. 1909 S Key Date Counterfeit or Real? 1909 VDB DDO Doubled Die Obverse 1909 S Lincoln Cent Semi Key Date 1909-S S Over Horizontal S 1909 S/S Lincoln Cent RPM (Not Horizontal) 1910 S/S Repunched Mint Mark (RPM) 1910 With V.D.B. or 09' Reverse (Unknown?) 1911-S Repunched Mint Mark (RPM) 1911-D Repunched Mint Mark (RPM) 1914 D Counterfeit or Real? 1914 S Lincoln Cent Value Semi-Key Date 1917 Doubled Die Cent 1922 No D Lincoln Cent 1922 Weak D Lincoln Cent Penny 1925-S Repunched Mint Mark (RPM) 1927 Doubled Die Obverse 1927-D Doubled Die Obverse 1928-S Large Mint Mark 1929-S Repunched Mint Mark (RPM) 1930-D Repunched Mint Mark (RPM) 1930-S Repunched Mint Mark (RPM) 1931 S Lincoln Cent Value Semi-Key Date 1934 Doubled Die Oberse 1934-D Doubled Die Obverse - RPM 1935 Doubled Doe Obverse 1936 Doubled Die Obverse 1938-D Repunched Mint Mark (RPM) 1938-S Repunched Mint Mark (RPM) 1939 Doubled Die Obverse 1941 Doubled Die Obverse 1942 Doubled Die Obverse 1942-D Repunched Mint Mark (RPM) 1942-S Repunched Mint Mark (RPM) 1943 Copper Lincoln Cent 1943 Repunched Mint Mark (RPM) 1943-D Repunched Mint Mark (RPM) 1943-S Doubled Die Obverse 1944 Steel Lincoln Cent 1944-D Repunched Mint Mark (RPM) 1945 Doubled Die Obverse 1944 D/S Variety 1 1944 D/S Variety 2 1946 S/D 1946-S Inverted Mint Mark 1946-S Repunched Mint Mark (RPM) 1947 Doubled Die Obverse 1947-S Repunched Mint Mark (RPM) 1949-D Repunched Mint Mark (RPM) 1949-S Doubled Die Obverse 1950-S Repunched Mint Mark (RPM) 1951 Proof Doubled Die Obverse 1951-D Doubled Die Obverse 1955 Doubled die 1936 Doubled die obverse, the date, LIBERTY and IN GOD WE TRUST has some doubling. 1941 Doubled die reverse: Doubling of the date and LIBERTY. 1943-D The D is stamped over another D (RPM). 1943-P Copper Planchet 1943 S Copper Planchet 3.11 grams Cent 1944 D Struck On Steel Planchet 1944 S Struck On Steel Planchet Cent 1944-D D over S the mint mark D is Punched over the S. 1946-S S Mint mark Punched over a D mint mark. 1955-D Stamped over a horizontal D. 1955-P No VDB. 1955-P Lincoln Wheat Cent Double Die cent. 1956-D D Stamped over a D mint mark. 1958 Doubled Die Cent 1959-D First year for Memorial reverse, check for wheat reverse. 1960-D D over D RPM 1960-P Look for Small Date variety, the 6 has a shorter stem than normal. 1960 D/D Small Over Large Date Doubled Die 1960 Doubled Die Obverse 1963-D Check to see if the 3 in the date is struck over another 3. 1968-D D mint mark stamped over another D. 1968-D Doubled die reverse, strong doubling in the word AMERICA. 1969-S Lincoln Memorial double die, all design features strongly doubled. 1970-S Small date Lincoln Cent with a doubled die reverse, strong doubling of TRUST & LIBERTY. 1970 S Small Date 1971-P Doubled die obverse, strong doubling on LIBERTY & IN GOD WE TRUST. 1972-P Lincoln Memorial Cent with a doubled date. 1973-P No V.D.B. 1980-D A shadow of an S mint mark struck above the D. 1982-P Doubling of IN GOD WE TRUST. 1982 DDR 1982 D Small Date Cent Copper Planchet 3.11 grams 1983-P Doubled die reverse doubled, IN GOD WE TRUST doubled. 1983 Copper Planchet 3.11 grams 1984-P Doubled ear, look at the ear lobe. 1984-D Doubled Date 1988 Double Ear 1988 Reverse of 1989 1989-P No VDB. 1992 Close AM 1992-D Close AM 1994-P Doubling of the last three columns on reverse. 1995-P Doubled die, LIBERTY doubled. 1995-D Doubled die obverse, strong doubling of the date and LIBERTY. 1996 Wide AM *Unconfirmed 1997-P Doubled Die, look at the ear lobe like the 1984. 1998-P Wide AM reverse Lincoln Memorial Cent. 1999-P Wide AM reverse Lincoln Memorial Cent. 1999-P There may be double dies varieties. 2000-P Wide AM in America 2001 D P Doubled Die Obverse 2001 D P Doubled Die Reverse 2003-P May be doubling of the steps, experts say “yes”, mint says “no” 2004 Doubled Die Obverse 2006-P Doubled Die Obverse 2009 Look for doubling of the thumb, boot and other features (several known varieties) 2009-S Proof Doubled Die Reverse 2011 Doubling of letters and shield 2014 Doubled Die Obverse
How do D over S mint marks happen? Does San Fran send their coins to Denver to re mint them? Or, does someone get sloshed down in shipping? Given how many there are, they party a lot!
Several ways actually. One is that the die maker uses the wrong letter punch to strike the die face, notices his error, grabs the correct punch and restrikes the new MM over the old one. It is done on the die that strikes the coins. The error is then transferred to the Planchet during the coin striking process.
