Hello, Your pics are too small, but from what I can see, this bag looks totally authentic! You could easily get a statement from any professional authenticating service, to prove Poshmark wrong. I really would like to see larger pics however. Try using the 'Go Advanced' feature here, which is in a tab at the bottom of each reply. There you can add the pics as jpg files so they will be larger. I think you got gipped! Telling you the lining should not come out is ridiculous. I sell Hamiltons on ebay all the time and the linings always come out. While I would like to see bigger pics, I really think it is authentic. You should go to that website I gave you. They could help you get your account back,