1927, Various Nationalities of the Soviet Union, 18k blue, complete sheet of 80 (5x8+5x8) with horizontal gutter in the middle, folded horizontally three times - at the top part between 4th and 5th rows, along topof the gutter, at the bottom part between 2nd and 3rd rows with significant separation, minor marginal flaws, otherwise nice quality, full OG, NH, VF and scarce in a complete sheet (Image)