Just finished adding over 40 more rarer slot card doubles to my Delcampe store. The link to the slot card listings in my original post will show the newest rarer doubles cards first then the latest common cards. If you want to see JUST the rarer doubles you can use this link that generates a search to limit showing just the almost 1,000 rarer cards.
https://www.delcampe.net/en_GB/collectables/search?categories%5B%5D=20485&search_mode=all&excluded_terms=&term=%5BRSC%5D&seller_ids%5B%5D=554914