Did you ever discover how to remove the chrome Aragorn? We face a similar problem here with the last 6" of a sword bladebeing pitted and with rust spots inder the chrome after being left in a wet scabbard by some dozy Officer. Oooooooops, sorry....... The Officer wouldn't have done it of course...., maybe it was his batman! Anyway, it looks like a partial re-chrome.
What about a fine blasting of sorts. Anyone got any ideas/views on this?