This is a round-about... so bear with me...
First, check out these 2 posts...
https://americanlongrifles.org/forum/index.php?topic=12514.0https://americanlongrifles.org/forum/index.php?topic=1798.msg18114#msg18114This rifle is from southern Germany and we would consider it a Jaeger.
Now... there is a smooth rifle with nearly identical carving that was in an article in the May 2004 issue of Muzzle Blasts magazine. The carving is so similar that anyone here would say they were made by the same man. The carving is that close.
The article states...
"The gun was purchased at auction in 1994 by Kels Swan, who had attended the auction because the auctioneers had listed it as a sale of 18th-century silver from Pennsylvania. The rifle was removed from the attic of an 18th-century house as an afterthought and added to the silver sale. Kels Swan is an inveterate, fifth-generation collector of historical memorabilia from the American Revolution and President of the H. K. Swan Historical Foundation, Inc. A portion of the foundation collection is on display at the New Jersey Washington Crossing State Park Visitors Center on the 1000-acre site near Titusville. The smooth rifle from the estate had no known provenance linking it to the American Revolution, but it had the right age, so Kels bought it.
Back then, I was able to access photos from their virtual museum online. I can't seem to do that now. Maybe someone in that area can help you out... or with a little digging online you might be able to find the photos.
Anyway...
According to the museum, that rifle was...
"Made by August Angstadt, Berks County, Pennsylvania. Mid-transition era (circa 1750-1760) Pennsylvania-Kentucky rifle. Believed to be owned by Captain Reynolds who was present at the second Easton Indian Treaty of 1758 in which negotiation resulted in the decision that white settlers would go west of the Allegheny Mountains."
Classification: Weaponry and Ammunition
Physical Location: Virtual Museum Only
Date Added to Virtual Museum: Thursday, March 11, 2004
According to the Muzzle Blasts article, Kels Swan is the one who made the Angstadt attribution and made the connection to Reynolds. How? Why? Who knows? I certainly wouldn't take this as fact. Was the rifle made in Germany and used in America close to the time it was made? Possibly. We would need to have more FACTS about how and where the rifle was specifically found.