| Oberliga West (1947-63) 1950/1951 - Appearances as Referee |  |
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| 27/08/1950 | DJK SF Katernberg | - | Borussia VfL M.-Gladbach | 3:2 | - | - | - |
| 18/03/1951 | DJK SF Katernberg | - | Duisburger SpV | 5:2 | - | - | - |
| Oberliga West (1947-63) 1950/1951 - Appearances as Referee | |
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| 27/08/1950 | DJK SF Katernberg | - | Borussia VfL M.-Gladbach | 3:2 | - | - | - |
| 18/03/1951 | DJK SF Katernberg | - | Duisburger SpV | 5:2 | - | - | - |
| Complete name: | Siekmann |
| Born: | |
| Place of birth: |
Germany |
| Residence: | Bielefeld-Brackwede |
| Nationality: |
Germany |