| Issuer | Date | Desc | State | ||
| - | no image | Ecuador | 4/24/1972 | empty sheet (#20729) | incomplete |
| - | no image | Ecuador | 4/24/1972 | empty sheet (#20730) | incomplete |
| - | no image | Ecuador | 5/4/1972 | empty sheet (#20731) | incomplete |
| - | no image | Ecuador | 5/4/1972 | empty sheet (#20732) | incomplete |
| - | no image | Ecuador | 6/28/1972 | empty sheet (#20733) | incomplete |
| - | no image | Ecuador | 6/28/1972 | empty sheet (#20734) | incomplete |
| - | no image | Ecuador | 7/1/1972 | Flowers 1972, sheet of 3 types | incomplete |