Berlin Bahnpost (DE)
From Stamps of the World
Postmarks placed as Ambulant in railway wagons. There were Bahnpost lines from BERLIN to BRESLAU, BROMBERG, CÖSLIN, EISENACH, GÖRLITZ, HALBERSTADT, HALLE, HAMBURG, HANNOVER, LEIPZIG, MAGDEBURG, MINDEN, STETTIN and STRALSUND when the German Empire was created.
Source: Peter Feuser 1983
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