I’m not sure what it is at all, but it is a full tang still blade with a wooden handle. There is a decorative guard and a Carolus III coin on the bottom of the handle. The blade has some surface rust but it solid and has an edge. The guard is flimsy but likely needs to be pushed into its original condition. There is also a sheath which is mostly solid but has slight chipping at the top point. I could easily do all these repairs and get the blade to a consistent finish but I would like to first see what it is and if I should value wise.

About 10-11 inches in length for the whole dagger. About 6-7 inches length for the sheath