The Exceptional Theory of Jaakobah Plankton is a 2725 years old piece made by Jaakobah Plankton, a philosopher living in Jerusalem.
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 Folk religion.
This piece doesn't exist, but as a legend. It is said that in the year -133, Eymen Plankton, the owner, made use of it in Jerusalem to empower the Plankton family. Now it is lost, or broken, we will never know.