Lagopus in general I would agree but that level and quality of engraving is not something that was often seen on guns made over here. They were still into cartoon animals and flying turnips at that time. I know a few would say that there were a few rare exceptions but they are very rare. That rose and scroll is not a typical American pattern of the day.
I think the gun has been reworked from another gun which most likely was not made in the USA. The barrels look to be a lesser quality that the rest of the gun. The fit and finish of the receiver is of very high quality but the fit of the barrels and finish of them is much lower workmanship. If the locks have been repaired why not re-barreled as well which would remove most of the proof marks to confuse the issue.
Perhaps someone can decide who was the inventor of that odd lever in front of the trigger to open the gun and that will shed light on the true maker. There must be a patent on that pride and joy somewhere. It seems like every tinker had a new improved system or feature that he just knew would be his ticket to fame and wealth. And a few were but most were inventions not needed, wanted or perfected before the next better version came along.
