That copper is really beautiful stuff. Now, how are you going to keep it from oxidizing? I have experimented with cymbals, and have found that plain ole Pledge or even "off brand" furniture polish will keep the copper from turning brown or other funky colors. I've tried about everything out there including all the copper cleaners and polishes, and silver and stainless cleaners and polishes...even one which was originall used for cleaning the Royal Families silver...can't remember the name, but nice stuff for silver...just not copper...I advise getting the copper really clean and shiny and then putting a thin coat of the furniture polish on the copper. I think the wax seals the copper from oxidizing...and it shines like new for a long time...
Just make sure the copper is shining when youy apply it, and