Marty, after several sleepless nights and careful consideration I decided to finish the wing. Feel free to erase it in photoshop if yo like it better unfinished.
I appreciate the comments on cold enameling. The gun is part of a private collection and will not be shot much. The owner is opting for no finish on the receiver just a good coat of wax. On a gun that will be blued, colored, or heat treated, it seems to me the enameling would have to be the last thing done.