If Jim calls it a globe, I can't argue with him. LOL
I've seen old wall mount half globes frames that look like that but I agree that the size is the interesting part.
I wonder if it could of been a clock body due to the holes in the back. Snap ring has me stumped don't know if clock faces were ever held in that way. I to agree odd size for a half globe face body. Yep no help just my thoughts, someone will tell me why my notion isn't right.
How do you guys know what size it is?
And how can you see the back?