Sheets of United Nations - UN offices in Vienna, 2011
| Issuer | Date | Desc | State | ||
| - |  |
UN offices in Vienna | 3/3/2011 | Flags and Coins 2011, empty sheet (#15903) | incomplete |
| - |  |
UN offices in Vienna | 4/12/2011 | 50th Anniversary of the First Manned Space Flight, sheet of 16 types | |
| - | no image | UN offices in Vienna | 4/12/2011 | empty sheet (#15907) | incomplete |
| - |  |
UN offices in Vienna | 4/12/2011 | empty sheet (#15908) | incomplete |
| - | no image | UN offices in Vienna | 4/12/2011 | empty sheet (#63769) | incomplete |
| - | no image | UN offices in Vienna | 5/5/2011 | empty sheet (#15905) | incomplete |
| - | no image | UN offices in Vienna | 5/5/2011 | empty sheet (#15906) | incomplete |