Rare Stamps & Postal History of the World

1941 30+30k blue and black, type II, imperforate sheet of 25, five stamps at right and third stamp in the bottom row are in black only, as the blue color is omitted, never hinged, several horizontal creases mostly between stamps and in the bottom margin, some inconsequential printing flaws, v.f. A fabulous and spectacular se-tenant error sheet, undoubtedly unique, with 2007 Krischke certificate ("druckbogen sind aussert selten, in dieser kombination mit grosster wahrscheinlichkeit unikat")
Estimate: $7000