5 Pfg Germania with overprint "Gdansk" as well "10" on 20 Pfg Germania on 15 Pfg postal stationery postcard being a 3 colours coloured mixed franking with cancellation through bridge date cancel "Gdansk Schidlitz 14 / 9 / 20" (gray wolf 3. 0) to Oranienburg addressed, faultless condition, signed pupils