Very nice rifle and welcome to the forum. Back a little bit I had to re cut all the markings on a little single shot 22, and the knight on the horse was the makers mark on that rifle. It was made by the Bayard company in Belgium, which was started by Henri Pieper. He was born in Germany and moved to Belgium where he started his gunmaking business. At one point they were considered one of the most important gunmaking firms in the country.
Hope this is of some help.
Underlever.