All available race results H. Siewert
| Date | Race | Rank |
| 19/04 | Den Haag - Brussel | 11 |
Rider information for 1931
| Rank | 1049 |
| Score | 4 |
| Name | H. SIEWERT |
| Country | Germany |
| Team | Individual |
| Date | Race | Rank |
| 19/04 | Den Haag - Brussel | 11 |
| Rank | 1049 |
| Score | 4 |
| Name | H. SIEWERT |
| Country | Germany |
| Team | Individual |