The Paul Revere Collection had a couple of different labels over the years, with two different sets of instructions on removing the protective coating. One basically says to soak in hot water, and the other describes using 409 or some other cleaners to remove it, so I assume they have used various types of coatings over the years. You can read the instructions of both by clicking on each picture in this post. If you don’t know which kind you have, I would recommend soaking it in hot water first, and if that doesn’t work, try the cleaner. Keep in mind that these instructions were intended for removal of this stuff 40-50 years ago, so it might not work so well after all these years. It isn’t easy to remove, in my experience, but it must be done if you intend to use them for cooking.
Once the coating is removed, the copper will begin to tarnish. If you want to polish them back up again, try this copper tarnish remover. It is all natural, and works great in about a minute. http://www.ebay.com/itm/TEXAS-MAGIC-Sparkle-Green-Copper-Natural-Tarnish-Remover-Cleaner-Non-Toxic-Pan-/281162099784?ssPageName=STRK:MESE:IT