20 Kopecks coat of arms design, cut, variety \"missing printing ink violet ultramarine\" in a horizontal pair with normal stamp, 2. Printing period, perfectly mint never hinged, very rare piece, signed Nemvalz, wild boar and photo expertize Gerhard Krischke \"the condition is perfect. So far only 4 such pairs known, however only this from the 2. Printing period. The others comes from the 5. Printing period, the so-called 2nd issue. \" Michel 8.500.- regardless of of the rare unit - an unique piece for the large collection!