Sheets of Uruguay, 2011
| Issuer | Date | Desc | State | ||
| - |  |
Uruguay | 3/4/2011 | empty sheet (#25634) | incomplete |
| - |  |
Uruguay | 10/18/2011 | Mercosur - China Zorrilla, sheet of 1 type | all added |
| - | no image | Uruguay | 12/9/2011 | International Year of Chemistry, sheet of 1 type | all added |