I'm selling some handbags for a friend. A couple of them have easily confirmed authenticity, such as a receipt of purchase and the authentication cards

I have this Louis Vuitton handbag, though, and I am unaware on how to determine its authenticity.

Here's an image of the bag in question. Any have some suggestions or resources for checking this out?

http://i3.photobucket.com/albums/y62/kas...