Where did you buy it at? Perhaps it was an open box buy. It should have stickers on it. If it doesn't, that's pretty much a tell tale sign that it's been previously purchased and returned. If you bought it at full price, then i'd be upset. If you got a discount on it, then that's probably why. If the tv is fine and experiences no issues, i wouldn't worry about it. But i would still be upset for being sold a preowned set without being notified.
