Thank's to all for the previous comments.
@Interested Party
Thank you for the pictures from Rivkin's book which show the comparable daggers I searched for. The author also thinks that these daggers were made in Tiflis. Because a number of experts and collectors have this opinion, I accept this thesis. Rivkin also thinks that such blades were made between 1810 and 1830, I think so, too. Later Kindjals and Qamas from the second half of the 19th. century have no blades of this high quality.
@ariel
The persian influence is unquestionable and what do you think is the other influence your previous writer means than an artistic one?
I have one more question: Is anybody here in the forum who knows which flowers are pictured on the blade and the scabbard-mounting?
A very similar flower you can also see on the dagger in the first picture of post 29.