The covers were autographed by the “Soyuz MS-18” crew: Commander, Oleg Artemyev; flight-engineer 1, Denis Matveev; flight-engineer 2, Sergey Korsakov. All three cosmonauts are graduates of the Bauman Moscow State Technical University. The 5 rouble postage stamp is devoted to the 175th anniversary of the Bauman Moscow State Technical University.
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