Sheets of United Nations - UN offices in Vienna, 2006
| Issuer | Date | Desc | State | ||
| - |  |
UN offices in Vienna | 2/3/2006 | empty sheet (#15895) | incomplete |
| - | no image | UN offices in Vienna | 3/16/2006 | empty sheet (#15893) | incomplete |
| - |  |
UN offices in Vienna | 10/6/2006 | empty sheet (#15894) | incomplete |