I recently picked up a Jupiter 969 alto with the silver plated body and gold keys. It had been used in a year or two and such has some evidence of tarnishing. The previous owner indicated he used a silver polish on the body, but used a toothbrush to apply it. As such I notice that there is some clouding on the back side of the body and the bell that is either residue or very fine scratches caused by a toothbrush. From what I have read, it would appear there is a lacquer coating over the silver plating. My question is what can be used to remove the clouding or brush marks to bring back the original luster? I have seen Haggardy polishing products mentioned as a good cleaner with a very fine abrasive polishing quality. I also have Flitz metal polish, which I have used with great success on firearms. I understand if there is a lacquer coating, it is likely to be thin, so I want to try something that will not or do minimal wear the original finish but still bring back the original finish. Thanks!