Remember the wonderful Soviet comedy by Leonid Gaidai "Ivan Vasilyevich Changes His Profession"? In the course of the painting, Ivan the Terrible (the one that is real) walked with a solid size with a cleaver in his belt! He also effectively chopped sausage for them, remaining in "confinement" in the apartment of the protagonist. Surely many would be interested to know what kind of dagger it is and where it could have come from the king.
On this point, it would be best to ask the masters and props artists. However, even without their help, for a person who is more or less versed in the issue, it is obvious that in the film Ivan Vasilyevich was armed and decorated with a Caucasian kama - a dagger with an asymmetrical blade. It should be noted right away that daggers were not widely worn in the Russian state in the 16th century. For the most part, she preferred to use the nobility for belt knives (which, by the way, did not differ much from the kama in size). However, since the charter did not exist, they were armed and equipped even under Ivan the Terrible with everything they could within the recommended requirements. Therefore, even the king could easily carry a Caucasian dagger on his belt.
And here some will ask: where did the Russian tsar have Caucasian weapons in the 16th century, if the annexation of this region to the Russian Empire took place only in the 19th century during the Caucasian War? In fact, everything is simple. The fact that the Caucasus was not part of the Russian state does not at all mean that they did not get involved with the principalities there. Suffice it to recall that the second wife of Ivan Vasilyevich, Maria Temryukovna, was the daughter of Prince Temryuk, the ruler of Kabarda, a principality in the very heart of the North Caucasus.
In addition, since ancient times, the most powerful weapons and armor production has been concentrated in the Caucasus. Helmets, chain mail, bracers and greaves, daggers, sabers and swords were forged by craftsmen from the Caucasus for many centuries, and then sold to other lands. Therefore, weapons were bought, seized, presented. After all, between the principalities a normal "civilized life" was in full swing according to medieval concepts.
As for the kama itself, these are very simple, but at the same time very beautiful daggers. Such daggers are made not only not in the Caucasus, but also in the Transcaucasia and the Middle East. The name itself, apparently, came from the Persian language. The dagger has a very long double-sided even blade 30-50 cm long. The handle of the dagger does not have a cross and is equipped with a powerful nouveau riche. A distinctive feature of the kama is the asymmetrical arrangement of the valleys.
If you want to know even more interesting things, then you should read about what kind of knife from "Rambo": how the blade got on the set, and why its appearance changed from film to film.