5 Kopecks postal stamp with gray ultramarine hand stamp overprint "Pleskau" from left at the bottom to the right above, mint never hinged, in issue typical a little irregular perforation, due to the all small edition a very rare stamp, signed Dr. Schultz and photo certificates Gerhard Krischke (2001) and Walter Zirath BPP (2022) "the right perforation is a little irregular, what but also is typical. otherwise is the condition perfect. ", Michel 3.500.-