Originally Posted by mariusgmioc
This is definitely not a typical blade.
Just have a look at the small double groove near the edge of the blade. Also the hollow grounding starting after about 15 cm from the very simple and atypical front bolster.
Last, but not least, even the maker's mark is very unusual and different from other known Turkish or Balkan examples.
To me, all these point to the direction that this blade was not made in any of the traditional Yatagan making centres. Neither Turkey, nor the Balkans.
My hunch would be Russian or European made blade.
The same goes for the Yatagan in posting #18. For this example, I noticed it bears the same maker's mark as the blade from the last photo of posting #6. That also is definitely not a typical Ottoman bolster.