I am looking for some information on a sword I picked up today. It's a Prussian Model 1889 degen with a double etched blade. On one side it has a "Crown over KS(?) over 4" cypher and "Husaren Rgt. v. Schill 1. Schles No.4". On the other side is a scene with horses and soldiers in battle. My questions are, what ruler does the cypher represent? What regiment did this sword belong to? Finally, can anyone identify the manufacturer of this sword? I believe the manufacturers mark is the eagle in the last picture. There are letters going around it that I believe is the manufacturer, but I can't make them out. Any help would be appreciated!