| DFB-Pokal 1976/1977 - Appearances as Referee |  |
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| 17/10/1976 | Wacker 04 Berlin | - | 1. FC Nürnberg | 0:5 | - | - | - |
| 07/04/1977 | 1. FC Köln | - | Rot-Weiss Essen | 4:0 | 1 | - | - |
| DFB-Pokal 1976/1977 - Appearances as Referee | |
|
|
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| 17/10/1976 | Wacker 04 Berlin | - | 1. FC Nürnberg | 0:5 | - | - | - |
| 07/04/1977 | 1. FC Köln | - | Rot-Weiss Essen | 4:0 | 1 | - | - |
| Complete name: | Walter Horstmann |
| Born: | 28/08/1935 † 21/08/2015 |
| Place of birth: |
Hildesheim, 
Germany |
| Residence: | Groß Escherde |
| Nationality: |
Germany |
| Bundesliga (GER) appearances: | 144 |