| KNVB beker 1970/1971 - Appearances as Referee |  |
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| 15/08/1970 | De Graafschap | - | NOAD Tilburg | 2:3 aet | 1 | - | - |
| 08/11/1970 | SBV Excelsior | - | GVAV Groningen | 1:2 aet | - | - | - |
| KNVB beker 1970/1971 - Appearances as Referee | |
|
|
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| 15/08/1970 | De Graafschap | - | NOAD Tilburg | 2:3 aet | 1 | - | - |
| 08/11/1970 | SBV Excelsior | - | GVAV Groningen | 1:2 aet | - | - | - |
| Complete name: | Jan F. Beck |
| Born: | 11/08/1933 |
| Place of birth: |
Netherlands |
| Residence: | Amsterdam / Osdorp |
| Nationality: |
Netherlands |