I know I've said this a million times now, but all "learnable" items (TT cards, minions, orchestrion rolls, bardings, emotes, master books, etc) need a learned/unlearned indicator on the tooltip. "Do I already know this" is a MUCH more useful piece of information than "is there currently one in my inventory?"

Here's what a WoW tooltip looks like. There is no question about the collection status. It's been 7 years, why can't we have something similar?