Any idea what time period this could be from ?

[Alex A]

Briefly, taking a closer look at the nakago and other features that are clear, reminds me of an Osaka Shinto.

 

The nakago, jigane, hamon.

 

Not saying it is, but that's where i would start to look as that what it reminds me of.

[Jacques]

Due to the measurements, i would exclude Kanbun shinto 

[Alex A]

Why Jacques?

 

Can you rule out the possibility that the sword was ordered those dimensions during Kanbun?. Sori of 0.6mm makes me think Kanbun.

 

Im not saying it is Kanbun, just curious.

 

Reminds of an Osaka sword i had dating to around mid 1700s. 

[Alex A]

Ps, out of curiosity. Does anyone else kind of think that the mid 1700s always comes across as a bit of an oddball era for Japanese swords?. As in it feels like compared to other times, less is said about that era.

 

Maybe its just me , dunno.

 

 

[Jacques]

Kanbun shinto is not only sori.... which is a little bit too small 

 

https://sanmei.com/contents/en-us/p2456.html

https://www.samuraimuseum.jp/shop/product/antique-Japanese-sword-wakizashi-signed-by-mino-no-kami-jyumyo-nbthk-hozon-certificate/?srsltid=AfmBOoqVUWsHsgkZy6PEPij9PiZLhZ4qD1V6kzd08nsNon0uVIOT1156

[Alex A]

Of course, its just that when folks talk of Kanbun Sugata it usually means little sori. Though seen loads of that era with the more usual sori, just bought one in fact.

 

This is what im talking about. It used to be mine many years ago. Though back then it didnt have the marks on the blade, had NTHK papers and was a lot cheaper.

 

It was almost straight with sori of 0.6mm, from memory. 

The Lanes Armoury | A Beautiful Shinto Katana By Kaga Kiyomitsu With NTHK Kanteisho Papers

 

Kanbun blades of that sori can get you good deals on the bigger name smiths, if your ok with that shape, that is. 

 

 

 

[Jacques]

Things are always relative, when we speak of little sori it's in relation to the previous or the following era. That said, the major characteristic of Kanbun shinto is on tapering = a notable difference (1cm or more) between moto haba and saki haba (1 cm or more). I don't trust NTHK (once i sent a katana with NTHK papers to NBTHK shinsa and that katana turned to be gimei....).

[Alex A]

KANTEI 1 – SUGATA #6 | Markus Sesko

 

Curiously, Osaka smiths gets a mention for adopting Kanbun Sugata.

[Jacques]

Not only Osaka smiths , and others are missing such Tadayoshi school 

 

Quote

Edo-shintô smiths like Kazusa no Suke Kaneshige (上総介兼重), Yamato no Kami Yasusada (大和守安定), schools like the Nagasone (長曾禰) school (Kotetsu [虎徹], Okimasa [興正]); the Hôjôji (法城寺) school (Masahiro [正弘], Yoshitsugu [吉次]); the 2^nd generation Sendai Kunikane (国包), Miyoshi Nagamichi (三善長道).

 

[Alex A]

Yes, one on a site a few weeks ago, Tadahiro.