Russian space banner sent in the early 90's, never hung 9" x 5 7/8"

Description

I am offering a Russian space banner that was mailed to my son in 1992.  It was always stored in a page holder and in an album...never hung exposed to the light.  The folded mailing envelope comes with it that will identify the sender if you can read Russian.
Unfortunately, my son did not keep track of who sent it, even on the rear of the envelope.  We tend to feel it might have been one of the unflown female astronauts but that is only speculation.
Plz check out the attached scans.