Please help ID cast iron decorative piece of ??
This cast iron piece is really interesting but I'm not sure what it is from! The lady I purchased it from thought it was from an old cast iron stove. I didn't find hinges on it anywhere. The edges are covered with tape. There are 2 small knobs on the sides but I doubt that would have been used to open a wood stove. One section is rusting slightly and the other section glimmers a little, like its copper. How would I clean it? Could it be painted under the black? Does anyone know what it was used for and what timeframe its from? Its 25.5" long x 20" wide and heavy. There are a couple of numbers on the back of it.
Thanks for your help!
The bottom section is a little glimmery:
a little rust here: