I just inherited this bag from a friend and I wanted to double check that it is authentic. What do I look for? I saw a pic of it, and it looks exactly like this. http://cgi.ebay.com/Authentic-Louis-Vuitton-Monogram-Theda-GM_W0QQitemZ180136267494QQihZ008QQcategoryZ63852QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Are there any specific things I look for when determining a fake? The leather is darker color but I believe it is because it is a used bags. I can provide pics if that helps. THanks!! Also when was this bag released and how much is it worth?? Thank you for all your help!!