How to spot a fake Dior scarf?

I am interested in buying a Christian Dior scarf off of Ebay, but I rather not spend the money if it is a fake. If anyone has tips it would be greatly appreciated!|||sign up at purseblog.com forum and ask the girls their in the Dior section. There is at least one expert in each forum. Read the rules, post the pictures and ask nicely. Someone should respond soon. :)