Lot 41563 – Russia 1988 Shipka 88 space mission signed cover

Space: Russia 1988 Shipka 88 space mission, a flown cover with both Bulgarian and Soviet flight cachets, signed by the Bulgarian Alexander Alexandrov and the Soviet Union’s Victor Savinih and Anatoliy Solovyov. This flight was necessary after failure of the 1979 mission, fine condition, the only example known; cert. Penev (2025).