Yes, Bill, as usual, you nailed the sub-school with eminent distinction. But with butt plate and the cool trigger guard, I'd call this one a Shimmelx2. I see the soul of this region of Berks County beaming through this piece.
The last one made here had the same concept on a late Rupp Lehigh pattern. Sleek curvilinear butt and a light Getz .50. No box, rear pipe or nose cap. It sold as the finish was drying to a deer hunter from Shoemakersville. Wayne