| Champions League 1964/1965 - Appearances as Referee |  |
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| 30/09/1964 | Shamrock Rovers | - | Rapid Wien | 0:2 | - | - | - |
| 18/11/1964 | Rangers FC | - | Rapid Wien | 1:0 | - | - | - |
| Champions League 1964/1965 - Appearances as Referee | |
|
|
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| 30/09/1964 | Shamrock Rovers | - | Rapid Wien | 0:2 | - | - | - |
| 18/11/1964 | Rangers FC | - | Rapid Wien | 1:0 | - | - | - |
| Complete name: | Leopold Sailvin Horn |
| Born: | 29/08/1916 † 16/09/1995 |
| Place of birth: |
Sittard, 
Netherlands |
| Nationality: |
Netherlands |