zac posen abbey satchel fake

  1. I found this fake Zac Posen red abbey satchel on ioffer:

    http://www.ioffer.com/i/33008581?store=1

    The seller is upfront about it being a knock off.

    I have not seen this handbag in real life, but I have seen other pictures of it online and I would not be able to tell the difference.

    I have a Zac Posen aurora bag, so I am familiar with his handbags.

    How would you be able to tell that this is a knock off?