5 Pfg Germania with overprint \"Gdansk\" as well \"10\" on 20 Pfg Germania on 15 Pfg postal stationery postcard as 3 colours coloured mixed franking with cancellation through bridge date postmark \"Gdansk Schidlitz 14 / 9 / 20\" (gray wolf 3.0) to Oranienburg addressed, faultless condition, expertized pupils