# fc178 Soyuz-40/T-2/Salyut-6 flown covers

Covers from archives of cosmonaut Leonid Popov, who along with Romanian pilot Dimitru Prunariu spent seven days aboard Salyut-6 station with Soyuz T-4 main team beginning may 15, 1981.Both cosmonauts Soyuz-40 signed these covers and on may 18, 1981 cancelled them with Soviet and Romanian onboard handstamps.All covers commemorate Cosmonautics Day april 12 and on their designs and on stamps of these covers can be noticed first cosmonaut Gagarin and Chief -designer Sergei Korolev.