Katana, O-suriage, (Tomomitsu)

blade length 66.0cm  curvature 1.8cm  width at the base 32mm  thickness at the base 7mm
no signature by shortening (O-suriage)
This is a very good blade from 14th century (Namboku-cho period). The signature was cut off by the work shortened the blade length so much. The work may be done in 16th century. The shape has lost its fumbari but keep an elegance still now.
The steel is very fine with full particles (jinie). Its view feels mild and shining. The layer pattern is mainly well forged wood grain, and flowing pattern appears much on the obverse side.

The hamon is made of small particles (konie) including some amount of large partilcles (nie). It looks so fine and mild. Its pattern is irregular (gunome and ko-choji) in straight outline. Around the middle part of blade length, hamon pattern becomes most irregular, and nie appears there.
A mild and thin utsuri appears along the hamon.
The engraving is, a sword with handle, Sanskrit letter, and groove on obverse side. A sword with winding dragon, Sanskrit letter, and groove on reverse side. The winding dragon design is typical in Osafune school in 14th century.

There are two holes on the tang, and one hole is filled with lead, and the other is filled with iron.
An excellent blade that we can not find so often. The character of this blade can be attributed to Osafune Kanemitsu or his brothers.

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