The Decayed Shield of Isaac Rajshuklam is a 3185 years old piece made by Isaac Rajshuklam, a mercenary living in Akkad.
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 Judaism.
This piece doesn't exist, but as a legend. It is said that in the year -1157, Canaan Rajshuklam, the owner, made use of it in Akkad to empower the Rajshuklam family. Now it is lost, or broken, we will never know.