Die Proofs Selection. 1977, Marshals of the USSR, Leonid Govorov, Ivan Konev, Konstantin Meretskov and Vasily Sokolovsky, four die proofs of 4k in issued colors, artists A. Filippov and N. Dvornikov, approximate sizes 86-88x118-119mm, printer's markings at sides, no gum as produced, VF and very rare, especially in complete set, $1,500-$2,000 (Image)

Die Proofs Selection. 1978, Ice-Breaker ''Moscow'', two sunken die proofs of 10k in purple or brown violet, artist A. Axamit, engraver T. Nikitina, sizes 100x100mm and 100x120mm, both with printer's markings at sides, printed on gummed paper, hinge traces, VF and rare couple, Est. $700-$800 (Image)

Die Proofs Selection. 1980, Marshal Aleksandr M. Vasilevsky , die proof of 4k in dark green, artist V. Nikitin, size 89x119mm, printer's markings at sides, no gum as produced, VF and very rare, Est. $400-$500 (Image)

Die Proofs Selection. 1980, Marshal Semyon K. Timoshenko, die proof of 4k in rose lake (issued color), artist V. Nikitin, engraver L. Mayorova, printer's markings at sides, size 89x119mm, no gum as issued, VF and rare, Est. $400-$500 (Image)

Die Proofs Selection. 1981, Ice-Breaker ''Malygin'', sunken die proof of 15k in green, artist A. Axamit, size 100x120mm, printer's markings at sides, printed on stamp gummed paper, traces of previous hinges, VF and very rare, Est. $400-$500 (Image)

Die Proofs Selection. 1982, Marshal Boris M. Shaposhnikov, die proof of 4k in lilac brown, artist V. Nikitin, size 100x120mm, printer's markings at sides, printed on stamp gummed paper, traces of previous hinges, fresh, VF and very rare, Est. $400-$500 (Image)