Cleaning vintage integrated amplifier


Looking for some advice on cleaning my Denon PMA-757. I finally got it connected to my second system and it sounds fantastic. However, I'd like to clean the silver faceplate a bit. Over the years, it's turned from a champagne/silver color to an antique gold color. Any suggesting of cleaning products to get her shiny again? Thanks so much! 
bluorion
Do not use CRC Brakleen, it is mostly acetone and uses carbon dioxide as a propellent. Likely to take everything off the faceplate.