The Standard Sword of Ishido Romanov is a 258 years old piece made by Ishido Romanov, a iron smith living in Osaka.
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 1821, Indira Romanov, the owner, made use of it in Osaka to empower the Romanov family. Now it is lost, or broken, we will never know.