The Decayed Prayer book of Irem Kamikasi is a 1597 years old piece made by Irem Kamikasi, a priest living in Istanbul / Constantinople / Byzantium.
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 Folk religion.
This piece doesn't exist, but as a legend. It is said that in the year 574, Farid Kamikasi, the owner, made use of it in Istanbul / Constantinople / Byzantium to empower the Kamikasi family. Now it is lost, or broken, we will never know.