Pirkenhammer was formerly part of the German Empire. In the German Empire, the place was called Pirkenhammer (Karlsbad-Pirkenhammer).
The place is now called Březová and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Pirkenhammer | Austro-Hungary | Karlsbad | before the Treaty of Saint-Germain |
| Pirkenhammer | Czechoslovakia | Karlovy Vary | after the Treaty of Saint-Germain |
| Pirkenhammer (Karlsbad-Pirkenhammer) | German Empire | Karlsbad (St.Kr.) | 1938 |
| Březová (Karlovy Vary-Březová) | Czechoslovakia | Karlovy Vary | 1945 |
| Březová | Czechoslovakia | Karlovy Vary | 1992 |
| Březová | Czech Republic | Karlovy Vary | 1993 |