Petsch was formerly part of the German Empire. In the German Empire, the place was called Petsch.
The place is now called Bečov and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Petsch | Austro-Hungary | Komotau | before the Treaty of Saint-Germain |
| Bečov | Austro-Hungary | Komotau | before the Treaty of Saint-Germain |
| Bečov | Czechoslovakia | Chomutov | after the Treaty of Saint-Germain |
| Petsch | Czechoslovakia | Chomutov | after the Treaty of Saint-Germain |
| Petsch | German Empire | Komotau | 1938 |
| Bečov | Czechoslovakia | Chomutov | 1945 |
| Bečov | Czechoslovakia | Chomutov | 1992 |
| Bečov | Czech Republic | Chomutov | 1993 |