Germania stamps overprinted for the German annexation of Russian occupied Poland.
Poland had been partitioned between Germany, Austria-Hungary and Russia. In 1915, Germany conquered the Soviet portion and called it Russian Poland.
Russisch Polen overprints
Germania issues are a series of German stamps, released between 1900-1921, with the portrait of the Wagnerian opera star Anna von Stratz-Fuhring, representing the German empire.
Russisch-Polen is German for "Russian Poland".
Deutches Reich is German for "German empire".