[awdaniec666]

I attach some examples of turkish blades from different times.

Images 1-3: 15th century (All Topkapi Museum Instanbul)

Image 4-5: 16th - 17th century (Mueso de la real armeria, Madrid + Badisches Landesmuseum, Karlsruhe)

Image 6: 18th century (Badisches Landesmuseum, Karlsruhe)

Note the older the blade, the more prominent the so called "hammer" by the yelman.
Good luck in your research.

Source: W.Zablocki - Ciecia prawdziwa szabla.