for sale Den Dewa Ko-Gassan Gold inlay Nihonto Katana, Muromachi Era: 600 yrs (NTHK paper)

[Greg F 1,155]

Brian regardless off the hada name its nice and its great you feel a conection, congratulations.

 

Greg

[Ed 1,338]

This presents a good educational opportunity for all, two things of note:

1. The hada seen on this sword is NOT Ayasugi.  It is Itame with Mokume as stated on the papers.

2. Jussi pointed this out, but I would reiterate this sword is papered to "Den" Gassan Chikanori, not directly to him.

[Rivkin 493]

Gassan Chikanori is not supposed to be pure ayasugi, but rather ayasugi that appears in small parts of the blade, like one sees in Houju. In NTHK definition Gassan Chikanori especially is basically late Muromachi blades which exhibit high contrast hada, weak hamon and some evidence of something that looks ayasugi.
NBTHK papers would typically yield a different name, though equally vague; Fuyuhiro is a common NBTHK counterpart attribution.
Both are not particularly supported by signed blades.
 
Kirill R.