Adding PSA slabs to my set that already show up in another set name
I am a newbie on the set registry front.....am setting up my 1959 Fleer 3 stooges set. Some recently acquired cards are part of other sets. I have sent a "request" through PSA to ask the owner to remove the card from their set registry. No luck. Since I now have possession of that slab can I use that as evidence to add to my set ?