I got some old postcards from a second hand book stand on Arbat in Moscow a few days ago, and this is my favourite one! It appears to have been published for Aeroflot (THE Soviet airline), with ‘Fly Aeroflot’ on the back. Also, matryoshkas!
No info on artist or year, c. 1970 I think.
Kizhi (postcard from 1971)
Bolshoi Theatre - Moscow 1977