The Decayed Chopper of Nirgal Dumanois is a 3587 years old piece made by Nirgal Dumanois, a butcher living in Nishapur.
Considering its age and the quality of the work, people consider it of no value.
It is engraved with central asian patterns and some symbols pertaining to Yazdanism.
This piece doesn't exist, but as a legend. It is said that in the year -1589, Bashira Dumanois, the owner, made use of it in Troy to empower the Dumanois family. Now it is lost, or broken, we will never know.