Sorry but I believe this piece to be 100% authentic for the estate from which it was purchased had very high end glass, furniture and antiques. As-well-as the dealers reputation who is "Certified Appraiser of Antique Appraisal & Estate Sale Service" and very much respected by the USPAP tested and qualified. (Certification includes Antiques, Fine Art, Appreciable Residential Contents). she appraises professionally for the public, attorneys, personal representative, estates, IRS and insurance
requirements.