| 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 |