The Standard Door of Medina Ku-enlilacox is a 4445 years old piece made by Medina Ku-enlilacox, a builder living in Nippur.
Considering its age and the quality of the work, people consider it of the highest 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 -2351, Bakshishum Ku-enlilacox, the owner, made use of it in Nippur to empower the Ku-enlilacox family. Now it is lost, or broken, we will never know.