Four Space Treaties, ranging in size from 8.5 x 10.5 to 8.5 x 11, each bearing a First Day of Issue stamp, produced by longtime autograph dealer Sy Kessler to commemorate the event, each signed in felt tip or ballpoint by a noted cosmonaut. Signers are: Vladimir Dzhanibekov, Nikolai Rukavishnikov, Yuri Romanenko, and Boris Andreyev. In fine condition. Pre-certified Steve Zarelli and RR Auction COA.
