1960 - 2006 Proof Sets 1960 - 1978 Proof Sets 1979 - 1992 Proof Sets 1993 - 1999 Proof Sets 2000 - 2004 Proof Sets 2004 - 2006 1960 $25 1961 $18 1962 $18 1963 $18 1964 $18 1968 $9 1969 $9 1970 $12 1971 $8 1972 $8 1973 $15 1974 $15 1975 $15 1976 $15 1977 $12 1978 $12