So, yesterday I reached lv 76 and unlocked 3-nut marks. But after accepting bills from Nuts Board in Crystarium, I couldn't find it anywhere in my inventory. I accepted new marks today, got message informign that I didnt' complete previsu stack, but still couldn't find them in my inventory - neither in Key Items tab, not in regular inventory.

In fact, I noticed that some of my other bills dissapered too - Like Elite Clan Mark Bill, or Veteran Elite Clan Mark bill (this oen is still on one of my hotbars, so I can open it without trouble, even if I don't see it in inventory)