12 Pfg bright carmine red / ornamental field / 8 Pfg bright red orange in the horizontal gutter pair, watermark X steps falling, white paper, mint never hinged, photo expertize Ströh BPP (2009) : \"the gutter pair is - genuine and immaculate - in mint never hinged condition with original gumming without hinge respectively hinge trace. The left vertical perforation at the T gutter was folded. The so-called calender creases (gum creases) are like most customary manufactured and no lack. From this gutter pairs were me so far first three examples to the examination presented, large SBZ-rarity. \" rarity! Michel 1.800.- for *, ** must well, about 4.000.- be.