The Historic Gold mask of Eymen Artengo is a 4005 years old piece made by Eymen Artengo, a goldsmith living in Isfahan.
Considering its age and the quality of the work, people consider it of priceless 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 -1815, Yusuf Artengo, the owner, made use of it in Isfahan to empower the Artengo family. Now it is lost, or broken, we will never know.