I understand about the Mamluk playing cards. No surprise, I don't get the Trumps. Who the hell thought of these? What was their purpose? What about the idea that the cards are a memory device?
this might not be the right forum...there's a tarot collectors forum (called just that) where the mavens hang out, and a few of us others, too. those guys know everything about decks, Enrique--might try there.