1 Kr on thin yellow paper, vertical strip of three, wonderfully fresh colours and superb condition with perfect complete perforations all round(!), on desirable piece with 2 clear K2 DONAUESCHINGEN cancellations. Upper two stamps additionally show plate flaws "Frame line indented at lower right" (handbook 1/45, sheet position 58) and "Frame line deformed at top centre" (handbook 1/11, sheet position 68), expertised Pfenninger and Stegmüller BPP photo certificate, ex Erivan Haub