Okay, so lots of players got an extra AG Crest due to the mission reward glitch. These came unbound, and have naturally found their way onto the AH. Here's the thing: once bought from there, you're stuck with them (kinda like the Kozma recs which appeared as featured auctions after she stopped selling them). Which is fine, but there's no warning whatsoever! This is a little bit annoying for those who'd hoped to trade them later.
I'm sure there's nothing that can be done at this point. Just wanted to note the oddity and record my displeasure.
They're still not bound. I just now bought one from the AH and resold it.