I don't have a picture of the back. I actually don't have the picture at all anymore. I took the picture before they had an estate sale of my grandfathers house. I've always been curious and was just hoping I'd be able to figure out where it came from. I asked my dad and he says it does have glass, it's not painted, it has fairly coarse threads. He hasn't seen the back in about 40 years because his mother got it framed.