| Issuer | Date | Desc | State | ||
| - | no image | Ecuador | 3/2/1978 | empty sheet (#20750) | incomplete |
| - | no image | Ecuador | 3/17/1978 | empty sheet (#20751) | incomplete |
| - | no image | Ecuador | 4/12/1978 | empty sheet (#20752) | incomplete |
| - | no image | Ecuador | 4/13/1978 | empty sheet (#20753) | incomplete |
| - | no image | Ecuador | 4/13/1978 | empty sheet (#20754) | incomplete |
| - | no image | Ecuador | 5/24/1978 | empty sheet (#20755) | incomplete |
| - | no image | Ecuador | 11/7/1978 | empty sheet (#20756) | incomplete |
| - | no image | Ecuador | 11/7/1978 | empty sheet (#20757) | incomplete |
| - | no image | Ecuador | 11/22/1978 | empty sheet (#20758) | incomplete |