If someone is so inclined to rip off another by falsely describing an item, then surely they would think nothing of applying some black boot polish to hide any marks or scratches.

You could insist on photos, however, the close up, detailed pics required to show the likes of crimp marks do not always show the detail.

In selling on a forum such as this using distance selling, there will always be the requirement to trust someone and with people being people, there will always be someone who will abuse that trust.