Kinda figured @rogdcam. Worth a shot.
I " inherited
" a bunch of Russian commemoratives from that era.
One item was a display folder with all mint condition stamps but hinged to the folder pages, blank pages. The other item was a mini stock book with a bunch of different commemoratives, partial sets, filling the book. It has remained intact while the folder has been disassembled, stamps falling out of it. I still have the folder with the stamps but much more stable setting.
I'll have to photo them and post them here, one of these days. If there is any interest. Some of them are stunning.