Katana in Shirasaya
Signature:matsumura Oumi Suke Minamoto Hiromitsu Saku
Bunkyu 4 Nen 2 Gatsu hi. (NBTHK Hozon Paper)

Sayasyo:Busyu Jyu Matsumura Oumi Suke Minamoto Hiromitsu Saku Iimuta shinshinto meikan ni edo jyu yotsuya saemoncyo jyu ari Bunka 4 nen 2gatsu hi ari sakuto mare nari chincyo chinpin. Kanzan shi.
explanation:according to the shinshinto book which was published by Iimura, he was working at Edo yotsuya.
His sword was mentioned bunka 4th year and rare item and precious
The length of the blade is 67.8 cm or i26.7nches.
Syowa 52 year middle autumn lucky day Kanzan sensei wrote on his diary.

The blade was polished .
Blade length : 67.8 cm or 26.7nches.
Sori : 1.2 cm or 0.472 inches.
Mekugi: 1
Width at the hamachi :3,31 cm or 0.303 inches.
Wide at the Kissaki : 2.46cm or 0.97 inches.
Kasane : 0.8 cm or 0.315inches.
Era : late Edo period.
Shape : The blade is wide and thick with big kissaki nice looking healthy sword.
Jitetsu :Itame hada well grained with jinie attach uzumzki style jigane appear.
Hamon : Niedeki gunome midare and in Ha, there are many sunagashi and also small kinsuji work.