Tanto, originally no signature
blade length 29.2cm, thickness at the base 6mm, width 2.7cm
This is a typical tanto blade from 15th or 16th century. The character is like Mihara or so. Simple and neat weapon.
Steel has a wood grain layer pattern. It is visible. And some rough layer also appears.
Hamon is made of small particles (ko-nie) and large particles (nie). Its pattern is straight including some small activities. It is bright all through the blade except for the very tip. The hamon at the very tip is dim somehow. Utsuri also appears as shirake pattern.
Polishing is the modern style (Hadori style). The blade surface has scratches, but still enough to study the blade.
This blade must be a trustable weapon at battle field. Such a simple blade is very popular in Koto period. So it is not very easy to guess the smith or school. We attribute it to Mihara school in Bingo province for a while.
Anyway this is a nice blade to see what Koto blade is. It is quite different from beautiful art blade in Shinto period.
Tang, originally no signature
The right angle file work is original. But the rust on it is not thick enough as the age from 16th century. It looks that the surface was cleaned in the past. The tang has some dimples caused by deep rust. So the tang might be covered with deep rust once, and then cleaned.
Habaki is made of silver.
Shirasaya and bag
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