I am watching a beautiful vintage bag that a seller claims to be new and never used. While I have no doubt the bag is authentic, what I find odd is her refusal to show photos of the interior serial number and corresponding authenticity card. When I inquired she told me to look up the "sku" number from the photo of the box she posted. Should I be appalled. I have never seen or heard of such a thing. Why would a seller refuse to divulge these things to a prospective buyer. Can anyone please explain the logic to me. I have purchased many designer bags on EBAY, including Chanel, and never once had a seller take this stance. Thank you ladies.