1 Mark high values only for franking by the postal service, on small letter piece with CTO "Gdansk 1 x 23.10.20 2-3 N", rare stamp with a edition from only 2.120 copies, very well perforated, excellent condition, signed Richter, Dr. Dub and B. Casdorp as well dealers sign from the earlier Danziger dealer Hencke, photo expertize Karl Kniep BPP (1990) "very fine stamp", Michel 2.500.-