Breitenbach was formerly part of the German Empire. In the German Empire, the place was called Breitenbach.
The place is now called Potůčky and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Breitenbach | Austro-Hungary | Neudek | before the Treaty of Saint-Germain |
| Breitenbach | Czechoslovakia | Nejdek | after the Treaty of Saint-Germain |
| Breitenbach | German Empire | Neudek | 1938 |
| Potůčky | Czechoslovakia | Jáchymov | 1945 |
| Potůčky | Czechoslovakia | Karlovy Vary | 1992 |
| Potůčky | Czech Republic | Karlovy Vary | 1993 |