Copper Flute #PC0005 in Pure Copper With Arctic Burl EndThese Pure Copper Flutes have been polished and wet sanded to a beautiful sheen. Now the thing about raw copper is, as you see with the other flutes, they form a patina, whether in a short amount of time like my work, or over time, like you see in the wild And no amount of finish will stop that from happening. The only thing you can do is keep it polished yourself, or let it create it's own patina with time So these Pure Copper Flutes are not coated