The General Misunderstandings back on the late 40's and early 50's (at least) were hard to see UP out of, especially is you plopped a metal visor on the outside. I've seen those and had to use them, back when signals were only on your side of the intersection. Cannot imagine needing one in an MG, but never know. Pimped out GT with a metal visor, maybe. Probably, as stated, just an MG badge on an old Guide unit.
Flat windscreen, right.