Thank you for this correction. You are right, the blades do look very similar!
I´m happy to have the opportunity to learn here
Is the image from " A Study of the Eastern Sword"? It looks very well made.
Edit: Looking at the tatar blade on the image you have posted, it seems to me that there is a wide fuller (or should it be called a broad and shallow depression) on the blade as well as a little hammer. I missed these kind of things on the Livrustkammaren Karabela. This is why I had the thought of a decorative-only blade in the first place. It looks like just a plain piece of shaped metal to me.