I got myself the Art Deco model a few years ago and it came to me pretty dull, and with a nice green patina over a lot of the metal. I decided to use an easy, old-fashioned trick for polishing silver -- I used regular toothpaste (not the gel kind) and a soft toothbrush and gave it a good polish. It came out looking almost like new (minus the brassing, which is a different issue), and it still looks as good today as it did then (about 3-4 years ago now). I only wish it shot great too (it's only useful for the top half of all the shutter speeds).