Scanned and provided to the general public by the lovely Marya Koshkina here and here. There were no official celebrations of Christmas in the USSR, of course. All of that energy was shifted to celebrating the New Year.
This has to be one of my favourites:
Because I was born in 1984, I was able to experience something of what this card portrays. And by that I mean that I got to watch other people drink Soviet Champagne.
Natalia A. 
and I was born 10 years before you….Oh, those champagne glasses! Priceless. 🙂
These postcards are beautiful, Nat. Thanks for posting them. It’s particularly interesting to see contemporary themes such as the scientific/space ones. I can’t think of such imagery in North American greeting cards, which are usually very tradtional and sentimental.
Awesome post! Great history.
Merry Christmas to you!! 🙂