Sheets of Bulgaria, 1997
| Issuer | Date | Desc | State | ||
| - | no image | Bulgaria | 5/29/1997 | empty sheet (#83457) | incomplete |
| - |  |
Bulgaria | 10/2/1997 | empty sheet (#6283) | incomplete |
| - |  |
Bulgaria | 12/22/1997 | empty sheet (#6284) | incomplete |
| Issuer | Date | Desc | State | ||
| - | no image | Bulgaria | 5/29/1997 | empty sheet (#83457) | incomplete |
| - | |
Bulgaria | 10/2/1997 | empty sheet (#6283) | incomplete |
| - | |
Bulgaria | 12/22/1997 | empty sheet (#6284) | incomplete |