User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-16027701-20130929115808/@comment-4819590-20130929180650

Its a ticket. Looks like its used for making the high rank blade master type Tigrex armor. Also can be used for item trade, but you cannot trade for it, it is used to obtain certain rare items.

From what I found you get it in high level guild quests. Like around high 70's from the looks of it.