Wanderer 2½ PS 327 cc 1920
Martin Orro writes: Attached is a photo dated 1921 of my grandparents on his Wanderer when he was in med school in Germany. Would you happen to know the model? She said it was military surplus."
Paul Andreas Lang identified it as a 2½ PS 327 cc side valve single. Yesterdays has a 1920 machine which appears identical.