Bidspirit auction | Soviet Union - Die Proofs

Soviet Union - Die Proofs Selection - 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