I approached Sun Polishing to see if they could do anything with the original 1920's brass door hardware from the interior doors of my Arts & Crafts style home (6 sets). The hardware was in good working order, but the finish was in a dreadful condition, with the brass having worn through to the base metal after years of polishing, and everything black with dirt, corrosion and rust on the base metal. The friendly staff at Sun Polishing advised me on how a couple of different finishes & polishes could be mixed to give a final appearance that was sympathetic to the age of the pieces i.e. to avoid a brassy and cheap look! Final results are wonderful and have achieved a nice, warm aged look, but still with a pristine finish. Costs were very reasonable and I was impressed that they even diligently walked me through what I would need to do to re-assemble the parts (since they had to take the hardware completely apart to do the work).