Dave,
I just cleaned mine up with brasso after stripping off the old paint. You could use any good body shop buffing compound too. Then I cleaned them off and sprayed with several coats of defthane. Any good polyeurothane(sp?) spray would be fine. Mine have been fine for 10 years.
Good luck
Biggastractor
Unpainted corroded brass can be cleaned easily by a short soak in Lysol Toiletbowl Cleaner, regular not the scented versions. Non-removeable parts can be soaked in a wet piece of paper towel or have it brushed on. 5-10 minutes should do it. The active ingredient is Phosphoric Acid, so a water and baking soda will be needed neutralize it and a lot of water to flush it clean. I have used it to clean delicate brass electrical contacts as well. The clean surface will then need to be coated with polish, urethane, wax, oil, etc, as it will oxidize quickly.
Hi Dave,
Give me a call. I cleaned up the tags on mine and they look pretty decent now.
Scott
530-472-3499