# fc170a Soyuz T-4/Salyut-6 three flown covers

Flown covers from archives of Soyuz T-4/Salyut-6 Fifth main expedition commander Vladimir Kovalyonok including Cosmonautics Day cover, Intercosmos cover and Cosmonaut Training Center cover. Each cover signed by Soyuz T-4 crew Vladimir Kovalyonok-Viktor Savinykh and cancelled with on board handstamp of this team:FIFTH MAIN EXPEDITION V.KOVALYONOK-V.SAVINYKH, BOARD OF SPACE STATION SALYUT-6. Kovalyonok and Savinykh conducted a bonus mission aboard Salyut-6 station, which had already exceeded its design lifetime.Mission held over 74 days in 1981.Cosmonauts were visited by two guest crews of Intercosmos teams USSR-Mongolia (Soyuz-39) and USSR-Romania (Soyuz-40).