3056 Published June 21, 2017 at 763 × 761 in RSFSR. First issue. 1918 ← Previous 1918 70k brown, imperforate right sheet margin block of four, h.r., fresh and v.f., signed Goznak in margin. Only one sheet of 100 imperforate stamps were printed. This imperf. block is one of three known. An iconic Russian rarity (Zverev $120,000)