I wish it was me but unfortunately it’s from this website:
http://www.harmankaya.net/KasimBeyPanzerstecher.html
It must be some fortunate museum curator fellow handling the beautiful sword
But the same sword appears on the right in my previous post from a picture taken by me through the glass of the display case at the Imperial Armoury in Vienna during my visit last December. I wanted to show more details of the sword by adding the photos from the website. Note how long the sword is, and that the blade is reinforced for greater strength and rigidity required to penetrate chainmail.