Soviet Union - Large Die Proofs

Soviet Union - Large Die Proofs
1983, Large Refrigerated Transport Ship, two sunken die proofs of 15k in black brown, first one with complete the other one with a part of engraved design, artist Y. Artsimenev, approximate size 100x120mm, first one with printer's markings, produced on gummed paper, some trace of hinges, VF and very rare, Est. $1,000-$1,200, Scott #5160