Antq Orotone Portrait of Woman Full Sz 8x10 Glass Plate in Original Ornate Frame For Sale

Antique Orotone Portrait of a Woman who is adorned by flowers typical of the late 1800s and very early 1900s.
This is a large glass Orotone with glass measuring a full 8x10" plate and it appears to be in its original ornate frame. The frame some loss to the gesso at the lower left corner and some other bumps and grime. I believe the grime may have been soot from years of adorning the walls of a home using a furnace or wood/coal stove for heat.
This photo would have been expensive but there is no identification on it and I have not found any information by doing image searches.