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
1944 Beavertail Cactus 20c multi. 12/11/1981 11 48M
1945 Saguaro 20c Multicolored 12/11/1981 11 48M
1945a Desert Plants 4x20c multi. 12/11/1981 11
1946 "C" Eagle 20c brown 10/11/1981 11x10½ 2.397B
1947 "C" Postage (20c) brown 10/11/1981 10 Vert.
1948 "C" Postage (20c) brown 10/11/1981 11 x 10½
1948a "C" Postage (20c) brown 10/11/1981 11 x 10½
1949 Rocky Mountain Bighorn 20c dark blue 1/8/1982 11
1949a Bighorn Sheep 20c dark blue 1/8/1982 11
1949c Bighorn Sheep 20c dark blue 1/8/1982 11
1950 F.D. Roosevelt 20c multi 1/3/1982 11 164M
1951 Love 20c multi 2/1/1982 11 Love
1951A Love 20c multi. 2/1/1982 11¼x10½ Love
1952 George Washington 20c multi 2/22/1982 11
1953 Alabama 20c multi. 4/14/1982 10½ x 11¼
1953A Alabama 20c multi. 4/14/1982 11¼ x 11
1954 Alaska 20c multi. 4/14/1982 10½ x 11¼
1954A Alaska 20c multi. 4/14/1982 11¼ x 11
1955 Arizona 20c multi. 4/14/1982 10½ x 11¼
1955A Arizona 20c multi. 4/14/1982 11¼ x 11