|Pseudonym reading||Parents and children|
|Specified type||Prefecture designation|
|Designated date||October 3, 1980|
|location||Morioka City Ueda Matsuyashiki|
70.6 cm in length.
Warpage 1.2 cm.
It is a little tall and wide, and the warpage is shallow.
The ground is cypress cedar skin with a thick, well-boiled skin.
The blade can be boiled, and the blades of the straight blade become irregular.
Sand sinks, and gold streaks mix.
There is a burnout.
The stem is raw and long.
One eye nail hole, long inscription on the front of the finger with "Oshu Maisaku Tomonaga" and a line.
The production is the work of Tomohisa Maigusa during the Muromachi period.
There are few things that the individual name is known, and this is a rare case.
Moreover, the ground blade is both near sound, and the distinctive features of the dance sword are prominent.