At the beginning and the end of the day, it's still just a dirty old pawn shop with nothing even remotely interesting unless you really MUST have that Chumlee 4 Pres shirt.
Let me go ahead and tell you that you don't. You really, REALLY don't.
If you want to see COOL old Vegas stuff that's not in a pawn shop, go to Lost Vegas which is one block down the street instead.