This chart is based upon both major and minor catalog numbers. The default opening view shows all US stamps; you can filter the chart by using the drop down box to select stamps by ‘Type’.
Catalog Number Description Denomination Color Date Issued Perforation Num Produced Series
1966 Indiana 20c multi. 4/14/1982 10½ x 11¼
1966A Indiana 20c multi. 4/14/1982 11¼ x 11
1967 Iowa 20c multi. 4/14/1982 10½x11
1967A Iowa 20c multi. 4/14/1982 11¼ x 11
1968 Kansas 20c multi. 4/14/1982 10½ x 11¼
1968A Kansas 20c multi 4/14/1982 11¼ x 11
1969 Kentucky 20c multi. 4/14/1982 10½ x 11¼
1969A Kentucky 20c multi 4/14/1982 11¼ x 11
1970 Louisiana 20c multi. 4/14/1982 10½ x 11¼
1970A Louisiana 20c multi. 4/14/1982 11¼ x 11
1971 Maine 20c multi. 4/14/1982 10½x11
1971A Maine 20c multi. 4/14/1982 11¼ x 11
1972 Maryland 20c multi. 4/14/1982 10½x11
1972A Maryland 20c multi. 4/14/1982 11¼ x 11
1973 Massachusetts 20c multi. 4/14/1982 10½ x 11¼
1973A Massachusetts 20c multi. 4/14/1982 11¼ x 11
1974 Michigan 20c multi. 4/14/1982 10½x11
1974A Michigan 20c multi. 4/14/1982 11¼ x 11
1975 Minnesota 20c multi. 4/14/1982 10½ x 11¼
1975A Minnesota 20c multi 4/14/1982 11¼ x 11