I thought everyone might enjoy seeing how well this globe cleaned up! I did a thorough soap and water wash and followed by scraping off all of the old paint splatter and a little old tar. After that, I went to work with Mothers Metal Polish. Sounds funny, but the stuff really works great on glass globe bodies too! Takes off all of that old baked on dirt and strange marks. It wipes off to a brilliant shine from the glass too!
I was very fortunate in that the chimney cap was in very solid shape and I was able to get 2 of the knurled screws out without any damage. The other one seems to refuse to let go, so I guess it stays!
I'm in the process of moving a few things around, so I hope to be able to have this globe firmly planted in my big display case, for safety reasons! If not, its coming into my office in the house!