I have no idea how to tell that. It was given to me by a friend, who's husband gave her the purse, wallet and change purse. Her purse definitely looks authentic but never would I dare to ask. I can see you though I doubt her husband would buy a knock off . If you know of a way to tell for sure I'd be more than happy to check. I'm sorry I'm just not that type of girl I don't own anything by else by Loui Vuitton.