[USSR CCCP Space Program] Commemorating the 20th Anniversary of the Space Age: 6 covers (USSR)--stamps + illustrations + certificate signed by Alexei Leonov

Spiral bound (interior of boards); six covers commemorating various achievements of the first 20 years of the USSR Space Age. Covers measure approx. 5-1/4 inches tall x 7-1/2 inches wide. Stamps + illustrations (all illus. appear to be Leonov's). The binding shows some wear and the imprint of another book or publication that was laid on top of it. However, the covers are sealed in plastic sleeves. They are in excellent condition, as is the certificate of authenticity with Leonov's autograph. "Each of the Official First Day Covers in this collection bears the unique first day of issue postmark of Baikhonur, site of Soviet space launches.The cancellation date is October 4, 1977--20th anniversary of the launching of the first Sputnik." More details about the covers and/or photos to meet your specs available on request. The covers are described in the first two pages of this collection. Price negotiable--please inquire. Ships by Priority Mail (2-4 day delivery) at no extra charge to U.S. addresses. …