Industrial Holophane Substation Light

I acquired this one recently. And will start on its restoration this week. The first two pics are the lamp I have. The last pic is what it looks like restored.

This Industrial Holophane has 4 globes! There is the top prism globe. On the bottom, there is a double globe within a globe, also prism, held together with lead nut (you can just see the lead nut in the last pic)- this portion is considered Dust Tight. And lastly, the clear globe covering the double globe. The frame is primarily made of cast aluminum. Dates to about the '40's, maybe a little earlier.

This big bad boy will soon be my front porch light.