Trebizond arms with huge amount of corals?

[Radu Transylvanicus]

Very interesting subject indeed, Michal... One comes across them slowly but consistently. What I can add for sure is that such decoration was never popular in regimental version but rather in presentation to high rank officers.
In less ceremonial and more bellicose forms I could definitely tell you that, for sure, they were a lot more popular with the irregulars or brigands of the empire, from pandours and hajdouks to the bash-bouzouks, at least that’s to whom most of the ones that bear proofs of war have been normally attributed to. Most of them date between 17th to 19th centuries, with the peak somewhere in the middle. I believe I eve recall some poetry or folktales talking about a famous Romanian haiduc (hajdouk) from Wallachia that had its famous hand gun fashioned like it.
They were popular ornaments and their usage was not restricted to weapons of course, one would fond them on other ittems like bags, scabbards or belts.
Funny enough I remember my mother had a necklace from her mother, a full string of coralite, which if sectionate well would make perfect cabochon decoration for a weapon. (hmmm.... devilish grin...)
In Western European cultures for example when such decorations were spotted, if I remember correctly, the weapons were known as “a la Turque”, meaning Ottoman style. I very much agree with the europinion that they are true Ottoman influence; what better proof one could ask for but to observe exactly where they come from: the Porte and its sphere of influence and trade. Therefore, you can see them all over it, from the nimchas and Kabhyl muskets of Maghrib and Algeria to swords from Russia, Arnaouti miquelets, Transylvanian and Hungarian palas or Caucasian qamas and I am sure your beloved Poland is no exception.
As a personal observation, pertinent I hope, however, nowhere near being a "rule of thumb" but worth considering is that decoration coralite when from Northen Africa (Maghrib, Algeria & Egypt) tend to be tear shaped, European (from Istanbul to Budapest) tend to be round pea like to ovoid, whilst Middle Eastern (including most of Anatolia) to Caucasus favored ovoid to linear ones... That applies just to the coralite not really to the turquoise and its keen.
Its hard to say how many are from Trabzon or even how many are strictly Turk, I preffer referring to them in a little more broad terms according to the times, it wasn’t much of Trebizond or Turkey, it was the whole empire’s fashion, it was Ottoman but definitely this region deserve its praise on the matter but like anything beautiful and fashionable, it tends to be quickly adopted and then produced somewhere else (ex. Damascus steel, recurved bow, soap opera and noodles)...