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Lot # 608 | P | Scott # 3886
| 1971, Ribbon Seals, sunken die proof of 14k in black, printed on white chalk-surfaced paper, size 102x99mm, engraver Mokrousov, officially signed at the bottom with Goznak boxed seal "Strogiy Uchet" (Strict Record) at right, mounted on presentation card, full OG, VF and extremely rare, Raritan Stamps guarantee . |