Got new tires last weekend (no, they aren't period correct) and wanted them mounted on my 40 y/o chromies (yes, they are period correct....just not factory options ((dealer))).
Long story short, we had a basement flood several years ago. 8 inches of muddy water on everything. Lost a lot but that's another story.
The chromes were stored on wood planks on the floor, but still got about 3 inches of muddy water on them. Cleaned them up quickly & put them in a crawl space. Four were sitting on bottom edges, one was facing upright. As it would happen some bugs decided to poop on the wheel that was facing upright. Minor damage but not discovered until I got the tires/wheels back from the shop. Apparently, bug guano is hard shit! Four wheels & tires just slapped on but the fifth was a mess. Specs of white bug guano everywhere.
So, I brought out my trust tube of Simichrome...20 years old! Went to work on the bad wheel for 5 minute and it was good as new (pic attached).
I bring this up because Simichrome is old school to car guys. Bikers love it. This compound is really invaluable to concours guys. It will clean/polish every metal there is, sometimes too much. I lost a Parade concours because I'd polished my headlight motors with this stuff, and the judge told me I'd had them chromed.
Point is, Simichrome is a valuable tool for concours guys, and cheap. At about 8 bucks a tube you'll get 15-20 years of use from it. Works great on any metal surface, just don't be too liberal or you'll end up with chrome like appearances.
Pat