1 Mark / 1 Shilling blue-green / gray black / salmon-red, perforated 11 1 / 2, proof, unused with original gumming, several perf tips a little shortened, very fine fresh colors, very rare, issued only 240 piece, expertized Brettl BPP and photo expertize Schulz BPP "the existing stamp has fresh colors, well centered and with full original gum. The not quite perfect perforation is at the rarity of this stamp meaningless. Restorations or other manipulations were unascertained. [. . . ] an extraordinarily scarce Heligoland stamp. ", Michel 1.800.-