The Disturbing Sword of Isaac Musicianer is a 4395 years old piece made by Isaac Musicianer, a iron smith living in Akkad.
Considering its age and the quality of the work, people consider it of high value.
It is engraved with central asian patterns and some symbols pertaining to Ancient Mesopotamian religion.
This piece doesn't exist, but as a legend. It is said that in the year -2147, Nirgal Musicianer, the owner, made use of it in Knossos to empower the Musicianer family. Now it is lost, or broken, we will never know.