Vintage Industrial Green Porcelain Enamel Metal Lamp Shade.
Some of the enamel is chipped and looks like 2 bullet holes in it as well as a few dents in the top as the photos show.
Has a distressed look to it.
Shade is approximately 18" in diameter and 8 1/4" deep.
Someone who is creative could repurpose this into something neat.
Please message me if you have any questions, comments or concerns.