How to clean an antique globe
Does anyone know how to safely clean rust off of an antique/vintage globe? The globe is from a school - I don't know the age. It has a very heavy metal stand that is rusty, but I'm more concerned with cleaning the globe itself. It appears to be painted on tin, rather than paper. It's hard to tell, but the continents are black and the oceans are light blue (under the rust!).
The globe stands about 5 feet tall and is probably about 2 feet wide. Any thoughts are appreciated - thanks!