Lewis B

Yes, the mune was often used defensively but according to the Nihontocraft Masahide paper, its use offensively was common practice yet rarely discussed in Western texts, and the smith would forge the blade with this application in mind. This is the relevant section: As for the use of the mune side of the blade in combat, this was a common tactic that was very effective in delivering a non lethal blow. Much like a "warning shot" in our frontier days or simply a mild punitive action. In many documented sword tests the mune as well as the sides of the blade were given specific and deliberate attention to make certain it could withstand the abuse of being used this way. Thus the sword is to be a complete weapon able to used in a variety of ways depending on the situation at hand. https://www.nihontocraft.com/Suishinshi_Masahide.html

If the mune was, as it appears it have been, used offensively I imagine the iori-mune might have had some probable advantage with its pointed profile.

Your eyes are 20/20. Someone tried to drill a hole on both side of the nakago, and quite recently. I would stay clear of this seller.

I've read mitsu-mune was more difficult to produce and therefore associated with blades of a higher caliber. I've seen it mostly on Tanto and having read in another thread that these short blades were often custom made for important persons during the early Koto, the additional work and expense would be justified.

Were mune styles exclusively used by certain gokuden. Are they reliable kantei features? I've seen several blades by Go Yoshihiro considered one of the founding smiths of the Soshu tradition that are iori-mune. Is mitsu-mune more common on tanto?

It appears you have some active rust on the blade so it's a good idea to coat the blade in Choji or Tsubaki oil and every few weeks wipe off the old oil and replace with fresh. That should help to stabilise things.

This is another by the same 2nd gen maker, but in Tamahagane steel. Being primarily swordsmiths they had access to some old material accumulated during the late 19th century by the founder.

Some Kiridashi can be works of art. This is by one of my favourite gendaito makers. 2nd generation Yoshiaki Fujiwara, Kato Shinpei. His son Kato Kiyoshi is also a certified swordsmith (nihonto name Kanekuni) and still active at 80+ years of age.

Looks like a case of over enthusiastic oiling Oli

Yes that's the event. Here is a glossy pre-show YT advertisement Regarding the NBTHK-EB meetings. You are entitled to one free admission after that you need to be a NBTHK member or pay an attendance fee. I'll PM some details.

Seller also has a bridge for sale. Jubi papers are extremely suspicious and look to be easy to fake. Worth reading this

This one is Hozon and sold through a Bonhams auction

Here is the Mei for a couple of other tantos by Miyamoto Kanenori. I see some differences not least the location on the nakago. A TH tanto

That wakizashi was originally purchased from a dealer in Andorra quite recently. They have a very poor reputation and their 'certificates of authenticity' are worthless. I would advise you to consider very carefully and certainly ask your friend why they are selling so quickly. As Lex says this dealer sells many gimei blades and is known to remove valuable fittings eg urushi saya, replacing them with cheaper, poorly fitting parts.

Here's an English translation Sword valuation en.pdf