A very wealthy client gave me a large mirror. They said the mirror is worth about $30,000.00. They were moving and the old mirror would not fit in their new house. It is almost ten feet tall and about 2.5 feet wide. The mirror wrapped with elaborate plaster carving that is gold like in color but not shiny. The back of the mirror seemed to have been painted my hand with some type of matailic paint. Please help me determine what type of mirror I have. Also a value of the piece and the best way to sell it. Thank you in advance for your wisdom.

Wealthy client