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Lot # 607 | P | Scott # 3882
| 1971, Dolphins, sunken die proof of 4k in black, printed on white chalk-surfaced paper, size 117x92mm, 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 . |