There is a George Potter rifle on the contemporary makers blogspot site today that is really something else. I just can't stop looking at it. The patchbox side moldings have a wavy line along the edge that I can't figure out. It may be engraved, but really looks more like filework, maybe with a thin wavy strip of the wood showing through, and a thin secondary border on the outside of that, which may be a separate piece of brass. The same theme seems to be repeated on the oval surrounding the cheekpiece star. If you haven't seen it, it's worth a look (or two or three or more) in my humble opinion.