Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 3
Lot 1215:
1978, History of Aviation, 4k-20k, complete set of six die proofs in gray black, artist E. Aniskin, engravers I. Mokrousov, M. Silyanova and V. Savelyev, each one with printer’s markings at sides, approximate size 120x100mm, full OG with traces of hinging, VF and extremely rare, especially in complete set, Est. $2,000-$2,400, Sc. # C115-20
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