David Brown Windows
These are off an old Davy brown tractor that we used to own. I think it was a 996 or 998, can't recall as I was 9 when we sold it.
The window with the frame is a back window but the air Rams are seized. Can be changed out with new ones. There is also surface rust on it that could be sanded down & repainted.
I think the separate glass might be the front window as its bigger than the glass in the frame.