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Keywords from Image Description:
GDRstamp Persnlichkeiten Mi. . Berhmte Naturwissenschaftler Series Famous natural scientists scanned by heied stamp scan author info painter Jakob Emanuel Handmann author info stamp designer Hanns Zehtmeyer scanned by heied File Leonhard Euler jpeg original painting Philately Portrt von Leonhard Euler Ausgabepreis Pf Hanns