If it's still helpfull, I dug out the receipts left by the previous owner of my boat. He had the 2 sheet winches and the mainsheet winch re-chromed in 2005. Cost was $400 plus tax. 15 years later, they are still perfect. I made up some sunbrella covers for them a couple years ago, so they should stay that way for a long time.
Name of company is Airco Plating Co, Inc., 3650 NW 46 St, Miami, FL 33142. Phone #305 633 2476.