[lug-nut]

As a buyer of a tobacco cards through eBay (maybe different for 9x12) they deliver the card in a really thick cardboard display thing that's actually not bad. Additionally, they put both sgc and psa holders in a sleeve with an eBay seal and QR code that says something like "authentication is void if seal is broken." I've never checked the QR code but I'm assuming it will take me to some site where the information is stored.