Sheets of Spain, 1961
| Issuer | Date | Desc | State | ||
| - |  |
Spain | 4/28/1961 | empty sheet (#9800) | incomplete |
| - |  |
Spain | 4/28/1961 | empty sheet (#9801) | incomplete |
| - |  |
Spain | 4/28/1961 | empty sheet (#9802) | incomplete |
| - |  |
Spain | 4/28/1961 | empty sheet (#9803) | incomplete |