Good reference Geo.
Glenn, I think I saw a shot of the cockpit viewfinder, on a restored French aircraft, when I was looking for cockpit pics of the F-84F. I'll see if I can find it again, and I'll post it here if I do.
EDIT: Found it. It wasn't French, but from the Royal Norwegian Air Force Museum site (Guttorm's place!). I presume that's the viewfinder screen centre top.