Here's a link to a custom search on Delcampe that will display only the currently listed Russian slot cards and nothing else. Just a quick and easy way to get to them...

https://www.delcampe.net/en_GB/collectables/search?categories%5B%5D=20485&search_mode=all&excluded_terms=&term=russia&seller_ids%5B%5D=554914

Don't forget you do not have to have an account on Delcampe, we can deal direct for trades or sales.