Thanks so much for all the nice comments on the gun. I think this gun has a lot to teach us about the lower Lehigh, Montgomery, and Bucks Co. area gun makers. I will try to answer some of your questions and give my impressions, so that we may all more fully understand this area of early gun making.
The general consensus is that this is a Rev. War or slightly earlier piece
The gun shows some Lehigh Co. characteristics, especially the tang carving. I have seen a very similar tang carvings on much later Classic Bucks Co. rifles, so this is not uncommon to find a mix of details on early or later guns.
The carving behind the cheekpiece is taken directly from the original in detail and style as nearly as possible. I feel that this carving also has a flavor of Lehigh Co. When I showed the photos of the original to Eric Kettenburg, he threw out the name Johannes Moll an early Lehigh Co. maker as the possible maker. I will try to get permission to post a photo of the original cheekpiece carving.
The Fleur de-lis finals of the lock moldings are in the classic Bucks Co. style. The forestock moldings end in the classic Bucks Co. termination. The gun has an embryonic extended entry pipe. Rounded thumbnail finals on the hardware and a myriad of carving details found on other later Bucks Co. rifles seem to make a pretty convincing body of evidence for a progenitor of the classic Bucks Co. style rifle.
There are a couple of rifles that seem to be "sister" rifles to this rifle; one is in Canada and the other in the U.S. At some point it would be interesting to get them together, possibly at a KRA show where they can be photographed, shared, and studied.
I hope to have this rifle at Lewisburg this February; if you can make the show, stop by and chat.
Best wishes
Ron