Bosnian Bichaq

[TVV]

I hope nobody would mind me renewing this thread wih new examples - my goal is to keep as much of the information in one thread for later reference purposes.
Here is a somewhat more unusual variation of this type of knives. Not as unusual as Rick's, but still different. It is similar to #11 from Hermann-Historica's catalogue, which is described there as a Bosnian dagger with lacquer filled drilled holes decoration and a more pronounced head (pommel?), with a simple scabbard (not pictured). Mine is without scabbard, but it would have probably been similar to the usual construction of two wooden halves encased in thin brass sheet.
Below I have it next to my other three bichaqs, and I have also tried to take comparison photos of the hilts. Finally, there are photos of all the markings - one is unmarked, two have the so-called "kilidj/shamshir" marking and the new one has a marking which I cannot name, since I am not really sure what it aims to represent.
I wonder, has there been a study of these interesting knives, which might give us some insight as to the meaning of the different marks and the decoration on the hilts. I agree with Jim that the circles and dots are most likely solar symbols, but would always love to learn more.
Teodor