Is there some special info that they fill in on the card verifying themselves as an AD and making the sale? I'm half expecting them to just write the serial number down with a sharpie or something.
I've also just noticed the receipt doesn't have the serial number on it, only the SKU. I kept the plastic from the back piece with the serial number and stuck it to the receipt. Also the card has 20110 stamped below and right of DATE and SJI-L under JEWELER