Sheets of Belgium, 1941 incomplete
| Issuer | Date | Desc | State | ||
| - |  |
Belgium | 5/1/1941 | empty sheet (#3634) | incomplete |
| - |  |
Belgium | 5/1/1941 | empty sheet (#3635) | incomplete |
| - |  |
Belgium | 10/5/1941 | empty sheet (#3636) | incomplete |
| - |  |
Belgium | 10/5/1941 | empty sheet (#3637) | incomplete |