Chu Suguha And Sunagashi?

[Prewar70]

Can you help me identify this type of activity in the hamon?  This looks like either chu or hiro suguha.  Sunagashi activity, when I read the description, seems to fit this pattern except that when I look at examples on line they seem very different than this blade.  Is sunagashi above the hamon, whereas this is below, and larger?  Sorry for the numerous pics, I hope it captures what I'm seeing.  Any help would be appreciated, thank you.

 

[Shugyosha]

Hi James,

 

I'd go with chu suguba. Sunagashi is an effect within the hamon rather than above it. There's a picture here:

 

http://www.japaneseswordindex.com/terms/terms.htm

 

There's definitely some nie in the hamon but I'm not sure I'm seeing the brushed sand effect in yours, but that might be my eyes.

 

Best,

John

[John A Stuart]

Wide suguba to me, hirosuguba. John

[Kronos]

Nijuba?

[Jean]

Looks like, James.

 

Here are sunagashi:

 

http://www.aoijapan.com/img/sword/2016/16507-3.jpg

[Ken-Hawaii]

Definitely sungashi, James.

 

Ken

 

[dig1982]

Something like sudare ba hamon?

[Jean]

No, Diego

[dig1982]

Thank you jean for the explanation, useful as always.

[Jean]

Diego,

 

Sudare ba refers to a blind bamboo curtain pattern, it can be niju ba or sanju ba or even more. This sword is not sudare ba.

 

Have a look at this one, it has undoubtedly some sudare ba pattern named as double hamon by Tsuruga san:

 

http://www.aoijapan.com/img/sword/2016/16041-3.jpg

 

Here is a fantatic sudare ba presented by Darcy, but most of the time in the ones I have seen there is no more than two "stripes"

 

http://www.militaria.co.za/nmb/topic/19460-a-wakizashi-by-yoshimichi-but-which-one/?hl=sudare

 

I have often encountered niju ba in Yamato works.

[ROKUJURO]

James,

in my opinion, this blade could display a very nice and interesting HAMON if the TOGISHI had not concealed it with a too simple SUGUHA polish. This may be different with the blade in hand and a proper lighting, but photographing KESHO is extremely difficult and often does not show all details unless you are an expert with the camera.  

[Prewar70]

When first looking at this blade the activity looked like rub marks from the saya, or like smudges of grey along the hamon.  It's in older polish, and agree, with a fresh polish it could look very nice.  The current polish is still good enough for my eyes though.  I am going to take it to the upcoming Minneapolis show and get some opinions on it before deciding on anything.  I appreciate the help gentlemen.

[dig1982]

Thank you very much Jean!