The Unique Abacus of Takama Ballotin is a 2779 years old piece made by Takama Ballotin, a merchant living in Aksum.
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 81, Zawadi Ballotin, the owner, made use of it in Lixus to empower the Ballotin family. Now it is lost, or broken, we will never know.