| Champions League 1984/1985 - Appearances as Referee |  |
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| 19/09/1984 | Austria Wien | - | Valletta FC | 4:0 | - | - | - |
| Champions League 1984/1985 - Appearances as Referee | |
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| 19/09/1984 | Austria Wien | - | Valletta FC | 4:0 | - | - | - |
| Complete name: | Jean Koster |
| Born: | |
| Place of birth: |
Luxembourg |
| Nationality: |
Luxembourg |