You'd be surprised how tough tarnish can be to dislodge from both old brass, and in particular chrome, after years of being “baked in” at approximately 98º to 100ºC for an hour a day. This is why, with the help of some advice from Barb at Orphan Espresso (http://orphanespresso.com) it was eventually obvious that the Wet or Dry paper would become necessary on the chromed boiler. In my opinion the slightly beaten and yet nicely polished look goes well with the age of a vintage piece of kit. New chrome would be perfect and bright, and is an option, but may just not fit will with the “feel” of the device. And now, the whole thing is looking pretty good. Time for the seals and gaskets kit and to get it rebuilt and running. You can get these at Orphan Espresso (http://orphanespresso.com), Stefano's Espresso Care (http://espressocare.com, and Thomas E. Cara (amongst others).