Sheets of Uruguay, 1977
| Issuer | Date | Desc | State | ||
| - | no image | Uruguay | 7/21/1977 | empty sheet (#25556) | incomplete |
| - | no image | Uruguay | 7/21/1977 | empty sheet (#25557) | incomplete |
| - |  |
Uruguay | 7/29/1977 | UREXPO '77, sheet of 1 type | all added |
| - | no image | Uruguay | 10/7/1977 | ESPAMER '77, sheet of 2 types | all added |