Lot 20098 – THE UNIQUE « ROOSEVELT » BLOCK WITH INVERTED OVERPRI

THE UNIQUE « ROOSEVELT » BLOCK WITH INVERTED OVERPRINT 1935 Moscow to San Francisco flight by Levaneskiy, 1R on 10K mint bottom sheet marginal block of four, with INVERTED SURCHARGE, the two lower stamps also with the variety « SMALL F » in « Francisco ». Outstandingly fresh and fine mint multiple with full original gum. (bold)Presently acknowledged as the most valuable philatelic item of Russia(/bold) Catalogue: Michel No. 527K + 527IK, Liapine 480 INV + 480I INV (2008 €3’000’000) Expertise: Mikulski 1988. Provenance: President Franklin D. Roosevelt. Estimate € 1’500’000 – € 2’000’000 see also special catalogue