Vintage Rare 1930’s Art Deco Industrial Machinist Eyeball Metal Lamp Swivels.

This is an amazing industrial machinist lamp. Curved eyeball lens. Top part swivels and moves. 10” tall by ~ 7” long. Lovely patina on this piece. No markings that I can see. May not be the original cord. The cord is extra long. Cord is dirty but with no holes or damage that I see. I do not know size of bulb or how to get inside. I did not clean or try to disassemble anything on this piece. I think this probably had a chain to turn on and holes underneath are probably for that. I did plug in and it came on so bulb does presently work but only way to turn off is by unplugging. Please review pictures as I included from all angles. They serve as part of my description. Don’t let this piece get away. No other one on eBay!