| Issuer | Date | Desc | State | ||
| - | no image | Paraguay | 1/26/1961 | empty sheet (#36460) | incomplete |
| - | no image | Paraguay | 10/16/1961 | empty sheet (#36461) | incomplete |
| - | no image | Paraguay | 10/16/1961 | empty sheet (#36462) | incomplete |
| - | no image | Paraguay | 10/16/1961 | tennis championships, empty sheet (#36463) | incomplete |
| - | no image | Paraguay | 10/16/1961 | empty sheet (#36464) | incomplete |
| - | no image | Paraguay | 11/27/1961 | empty sheet (#36465) | incomplete |
| - | no image | Paraguay | 11/27/1961 | empty sheet (#36466) | incomplete |
| - | no image | Paraguay | 12/22/1961 | empty sheet (#36467) | incomplete |
| - | no image | Paraguay | 12/22/1961 | empty sheet (#36468) | incomplete |
| - | no image | Paraguay | 12/31/1961 | empty sheet (#36469) | incomplete |
| - | no image | Paraguay | 12/31/1961 | empty sheet (#36470) | incomplete |
| - | no image | Paraguay | 12/31/1961 | empty sheet (#36471) | incomplete |
| - | no image | Paraguay | 12/31/1961 | empty sheet (#36472) | incomplete |