How would ebay know a bag is a fake?

[mellowtime2]

I listed a coach bag i thought was real but they said its a fake

[albertabrightalberta]

@mellowtime2 

There's no way anyone can comment without seeing pictures of the bag. 

Please post pictures of your bag here: 

https://community.ebay.com/t5/Handbags/bd-p/luxury-handbags