I am 95% sure of the answer, but thought I would get the groups opinions. I picked up a pack of these in a bundle that contained random convention card sets. I beleive they are just advertising/business type cards for Heritage auctions. They are the same size as cards, a little longer, but everything else is the same. Would they go into the site if I found the information on there. No #'s and there were 10 in the pack/stack I got.
I am leaning towards them not being listed, but thought I would ask before I move on.
grim25