Worldwide Air Post Stamps and Postal History, One Man Collection of Tannu Tuva, Philatelic Rarities of the World, Part 2
Lot 665:
Description
1935, stationery envelope 20k blue, printed on white paper, size 163x128mm, rhomboid interior (type a), sent in 1937 from Kyzyl, tied by black letter ”b” ”8.1.37” date stamp (Ustinovsky No.3.2), addressed to Academician Vladimir A. Obruchev, Russian and Soviet geologist, Moscow ”19.1.37” receiving markings, minor reversal soiling with no importance, VF and extremely rare, just a handful survived, Ustinovsky #K1, Est. $5,000-$6,000
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