This is really simple here. If you've already received a Gucci that you suspect is fake, you can hopefully tell so by its dustbag. No photos will tell here, only touch. The fake dust bags are really good, but only to the eye. The authentic Gucci dust bags feel silky smooth. The one fake I received felt dull & regular.

That's all there is to this guide! I hope it helps if you're in that unfortunate situation. Better yet, I hope you never get in it!

Good luck eBaying.