The Beautiful Abacus of Khabekhnet Aldagil is a 4074 years old piece made by Khabekhnet Aldagil, a merchant living in Karnak.
Considering its age and the quality of the work, people consider it of priceless value.
It is engraved with african patterns and some symbols pertaining to Ancient Egyptian religion.
This piece doesn't exist, but as a legend. It is said that in the year -1059, Judith Aldagil, the owner, made use of it in Babylon to empower the Aldagil family. Now it is lost, or broken, we will never know.