VEB Vereinigte Phophatdünger-Werke. von KÖSTRITZ nach OBERFROHNA. Stempel: Köstritz OberfrohnaZeitz Gera Hilbersdorf.
This product would be best fit for individuals or organizations involved in tracking or researching the history of the Soviet Union, particularly focused on the East German sector and the VEB United Phosphorus Fertilizer Works in the mid-20th century.
