Please help me authenticate a vintage Chanel

  1. Here are pics...
    The only other information I can offer is that it was owned by a 90 year old woman with one other black vintage Chanel and was purchased at an estate sale. The woman's daughter did not know if it was authentic either. Thanks for any help in advance.:yes:
     
    chanel front.jpg chanel inside.jpg chanel side.jpg chanel tag.jpg