Space Research on Orbital Complex. (Soviet Union, USSR 1981)

20 March (Soviet Union, USSR ) within release 185 Days in Space of Cosmonauts Popov and Ryumin goes into circulation Stamp Space Research on Orbital Complex. face value 15 Russian kopek

Stamp Space Research on Orbital Complex. in catalogues
Michel:	Mi:SU 5050
Yvert et Tellier:	Yt:SU 4787

Stamp is square format.

Also in the issue 185 Days in Space of Cosmonauts Popov and Ryumin:

• Se-tenant - Space Research on Orbital Complex. face value 30;
• Stamp - Space Research on Orbital Complex. face value 15;
• Stamp - Space Research on Orbital Complex. face value 15;