Only 1 sheet believed printed. 8k Type 2 Overprint Inverted on 1 kop. Typo No Watermark, Corner Block of 4.
Certificate by Krzysztof Ceremuga, well known Philatelic Expert. Signed on the back PhA/USSR. The item "RUSSIA, ZAGORSKIY 168 II Ta, 8K.OP INVERTED, CORNER BLOCK OF 4, MNH OG EXT. RARE" is in sale since Saturday, May 25, 2019. This item is in the category "Stamps\Europe\Russia & Soviet Union". The seller is "anatoly" and is located in Brooklyn, New York. This item can be shipped worldwide.