Jim, you really don't need to educate me on collecting guns. I have been at it since I was 13 years old and am now 77 years old. I have seen it all, and well comprehend the nuances of old versus new. That notwithstanding, I recently saw a rifle by the top contemporary maker that had been aged to look quite old. Yes, it did have his name on the barrel, but it wouldn't take too much work for an expert to delete that and replace it with the name Sheetz, or Dickert, or other. With that change, it could have well passed as an original. And, there are numerous others. It seems to me that if your client wants an 'old' looking gun, you are going to give him an old looking gun. At that point you do lose control of what becomes of it, and in fact, you have no further responsibility, or duty in the matter. Understood, but you and the client started the ball rolling. There is so much concern on this forum regarding legitimate restoration, yet seemingly little, regarding things like adding proof marks to new guns and such, which could become troublesome down the road. I am scratching my head over this.
But then, I am not a builder, don't hunt or shoot, and do not have much interest in modern work. Some of it is quite beautiful, and to be highly admired, without doubt, but if it isn't old, I ain't interested. Still and all, the best work in rifle building is being done by today's finest artisans. And, to that, permit me to say that I regard you as being in that company, (even if some of your work is art deco/noveau), in appearance.
Dick