Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums General Petroliana Discussion Can anyone id this large visible pump top??

I picked up what I believe is a visible pump top or dome. I have looked through both of Jack's books, but could not find anything similar. It appears to have had a globe ring mounted on the top and it has some hand written notes in pencil on it. One of the notes says "line up globe ring screws here", another says "support holes for dome", and the last says "plug socket". The gentleman that I bought it from claims it is for a visible and I bought it as such knowing full well that might not be the case. Any help is appreciated.

It is very large at 30 inches in diameter and 7 inches tall.

Thanks...Kevin