NIKOLAJEWSK/AMUR JAPANESE ADMINISTRATION, 10 Kop on 5 Kop brown-lilac, comb perforated Ks 14 1/4 :14 3/4, issue 1921, perfect unused condition (gum touched in one spot), expertised Dr. P. Jem, Pappadopulo, Ludger Hovest BPP photo certificate (2005)