Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2

Soviet Union - Large Die Proof

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Start price: $250

Buyer's premium:

1979, 400th Anniversary of Vilnius State University, sunken die proof of engraved part of the design, 4k in black, artist A. Zhvilis, engraver L. Mayorova, size 121x100mm, printer’s markings at sides, printed on gummed paper, traces of hinges, still VF and very rare, Est. $500-$600, Scott #4731