request for information on Zlatoust Yataghans

[gp]

Would any of you know if there is documentation or literature on yataghans produced by Zlatoust ?

If positive, kindly requested to provide details, even if they are written in cyrillic Russian

What I could find, and little do I know , was that quite some were dated back to the Crimean conflict between the Ottoman and Russian empires.

The first 2 pictures are no yataghan but a nice shaska, the others are yataghans.

Thanks a lot for any input, most highly appreciated!