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