The Thirty Kopeck Mikulski Block 30k Green & Crimson, the fabulous & outstanding block of four with practically full original gum, with the lower pair remaining unmounted mint, amazingly fresh & vibrant colours, a few perf. separations and some reinforcements, superb in every respect One of the two recorded mint blocks of four of this value, these being the largest known multiples One of the “Crown Jewels of Russian Philately” Provenance: Lipschutz & Mikulski Expertise: cert. Buchsbayew (2010) Estimate: € 170’000 – 220’000