Polnisch Hammer was formerly part of the German Empire. In the German Empire, the place was called Groß Hammer.
The place is now called Kuźniczysko and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Polnisch Hammer | German Empire | Trebnitz | 1914 |
| Groß Hammer | German Empire | Trebnitz | 1939 |
| Kuźniczysko | Under Polish administration | Trzebnica | 1945 |
| Kuźniczysko | Poland | Wrocław | 1992 |