CGC's article about the history and process of verifying these cards is absolutely fascinating
Yes, companies like PSA and CGC do grade jumbo cards, but they have special categories for larger cards
Anim Pakal, Thousandth Moon Compass Gnome Envoy of Okinec Ahau Gnome-Made Engine Illustrious Wanderglyph Market Gnome Oltec Cloud Guard Oltec Matterweaver The Golden-Gear Colossus Threefold Thunderhulk
Acceleration Acceleration (CTRL to add secondary) Advantage Advantage (CTRL to add secondary) Fly My Pretties Conundrum Sphinx Flying Whenever this creature attacks, each player chooses a card name
Bess, Soul Nourisher Reading Bess tells you exactly how you want to build her
We source them, hand-sort them, and put them into our own retail-ready hanger packaging so theyre shelf-ready the moment they arrive