Where in the world?

I'm not one to dumpster dive on a normal day, but I did find a winner just recently! People are always leaving things by the side of the dumpster where I live, things I suppose, people MIGHT want. Not too long ago, there was a bag of Depends and a pair of old, brown, leather shoes. I have no idea if those were picked up by some needy soul but I do know I left those treats behind. But, back to my own tale of  claiming other people's trash as my very own. I was throwing out some trash, as one does, and glimpsed my treasure:

Now you must understand, I've been wanting a globe for ages to add some worldly flair to my guest room. While I have seen some beauties, they have all been out of my price range and so happening upon this little gem was a happy moment. A few furtive glances at the unopened garages and another glance or two at the windows above, a quick grab, and I trotted quickly back to my place with my prize.

The bottom leaves a lot to be desired but the colors, turquoises and blues, are perfect for my guest room. Take a closer look at the bottom:

Is there any help for it? Would it help to spray paint it white? Or do any of my many (ha!) readers have any other ideas to help me turn my globe with a trashy past into a classy globe worthy of my guests?