Going to work on the horn grills and then restoring the original Bosch horns. I am fortunate to have original horn grills that have the small rivets. Rivets larger than the ones in the photos below are a real "tell" of reproduction units.
So, 50+ years of grime to remove, and much easier to do these when they are off the car. I soda blasted the back sides, which got them nice and clean. No blasting on the front, just lots of washing and 3 - 4 rounds of polish with Mothers aluminum polish. It is not advisable to try anything more harsh, as the bright anodizing will come off.
They are not perfect, but this is another place on the car where a little "patina" is ok.
Of course, I forgot to take a "before" shot, but the bottom photo shows what I started with. It is a shot of the horn grill and the lower grill. The horn and lower grills (where the fog light would go) were in the same condition. The cleanup of these is a ton of work, and unless you are afflicted with originality disease, i recommend just buying reproduction ones. Cheap and pretty.
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