JP that's one beautiful German!!! When was it built and do you know who built it??
The trouble with original muzzleloaders was at that time there were so many one man operations, which have long ago been out of business, like JP Beck in Lancaster/Lebanon county, Issac Haynes, Jacob Dickert or the Rupps up in Bethlehem just to name a few. The Europeans had many more firms building beautiful muzzleloaders. Look at all the now defunct English firms names like J.W. Edge and Issac Hollis come to mind.
All the best