A friend of mine had a couple of grease hole rifles made in Alamance County but I can't remember if they had brass buttplates or no buttplates. This one looks like something more from the mountains with the iron buttplate. Sometimes details like the incised comb lines travelled from one region to another, maybe requested by a customer that had seen it in another region. I haven't ever seen these details on a trigger though, don't know where it came from. They don't seem like a "left over" from manufacturing because it actually took some effort to do this.
