Its silver-inlaid inscription is the important source of the Japanese domestic politics in the period.
The original Chinese text is as follows; In English; In the tumulus two men were buried in each wooden coffin.
Artifacts excavated around the tomb indicate the two were local warrior class nobles in the 5th century.
In the Kofun period the polity in Kinai region advanced toward the unification of Japan.
The sword, which was bestowed to the local ruling family by the king of Wa, is regarded as an example of the birth of the ancient unified state.