Doubled Dies
The 1909 vdb doubled die  DDO 1
The 1917 doubled die  DDO 1
The 1936 doubled die  DDO 1
The 1936 doubled die  DDO 2
The 1936 doubled die  DDO 3
The 1941 doubled die  DDO 1
The 1941 doubled die  DDO 2
The 1943 doubled die  DDO 1
The 1955 doubled die  DDO 1
The 1955 doubled die  DDO 2
The 1960 D/D doubled die  DDO 1
The 1964 doubled die  DDR 1
The 1969 S doubled die DDO 1
The 1970 S doubled die DDO 1
The 1971 doubled die  DDO 1
The 1972 doubled die  DDO 1
The 1972 doubled die  DDO 2
The 1982 doubled die DDR 1
The 1983 doubled die  DDR 1
The 1984 doubled die  DDO 1
The 1994 doubled die DDR 1
The 1995 doubled die  DDO 1
The 2006 doubled die  DDO 4

The above list represents only a handful of the hundreds of Lincoln Cent Doulbed Dies (DDO's)
that exist.   These are the most popular and sought after DDO's.