The Grotesque Abacus of Akiba Rajshuklam is a 1304 years old piece made by Akiba Rajshuklam, a merchant living in Delhi.
Considering its age and the quality of the work, people consider it of some value.
It is engraved with asian patterns and some symbols pertaining to Buddhism.
This piece doesn't exist, but as a legend. It is said that in the year 755, Banyong Rajshuklam, the owner, made use of it in Delhi to empower the Rajshuklam family. Now it is lost, or broken, we will never know.