2 Sgr. Medium cobalt, smooth ground, plate flaw II \"diagonally line through postal stamp\", on all sides having full margins and having bright colours, horizontal pair, superb in every respect (choice copy), neat tied with better box cancel of 2 lines \"NEMONIEN 8 11\" (government Bez. Königsberg), with the plate flaw very rare pair, photo certificates Kastaun BPP, Flemming BPP and expertise Voigt VP (2019) : \"the condition is perfect. The plate flaw is rare. \"