Conserved123

Thank you all for your responses. Because of the historical sensitivity of this tanto, our training as cultural conservators prohibits us from disassembling, so I guess we shall never know what exactly is inside the tsuka. I do have a question though. It looks badly damaged, there are dents and chips everywhere on the metallic surface. Possibly has actually seen active combat? There are brownish-green substance between the arches of the seppa, looks like mud/dirt, some kind of organic residue. I was misinformed, apparently this did not belong to a family friend, it was donated to my university's teaching library, and prior to that, it is completely unknown. No clear provenance. Given that this type of tanto is so 'common', it feels like it is a testament of some kind of Japanese's defeat that resulted in these items becoming 'spoils of war'? I am absolutely haunted by the sadness and historical weight behind this tanto. What would be a culturally appropriate way to store it and care for it, does anyone know? The original naval officer cannot be identified, was likely killed in action, so what can I do to advocate for respect and care for this item that potentially has a violent past? Yes it is likely paper underneath samegawa, I agree. Thank you for being generous with your knowledge. Best Luke

protocol dictates we are not allowed to touch it in any way that's more invasive than using xray, UV, infrared, sadly. We don't have permission from the original owner to unscrew anything or dismantle it in any way, and rumor had it that it had been in their family for decades, and was already in a damaged condition when it came to them (white Australian family).

Thank you @John C. We have just obtained X-Ray images of our Tantō! The areas I have circled--my fellow grad researchers and I disagreed on this. They think these are damages/breakage in the steel. But to me these look like a mechanism to secure the nakago in position. Like a latch? Surely metals don't break in this manner...? What does anyone else think? @Bruce Pennington @Kiipu ? Such a beautiful, intriguing object.

Thank you so much @Kiipu.

@Kiipu I am so sorry, to be bugging you wise gentlemen again! You stated that Toyokawa Naval Arsenal was not established until December 1939, could you point me to a citable source for my research report? Academia is tricky that way. Many thanks in advance for your time.

Thank you @Bruce Pennington. The trouble with academic life, I guess. Citation citation citation. Ha!

@Rawa its hard to tell because the kashira is missing, but I think it's the Taisho/Showa term. The most useful book I have so far is "Japanese swords : cultural icons of a nation ; the history, metallurgy and iconography of the samurai sword" by Colin M. Roach. And thanks @John C that was really useful!

thank you @Kiipu

Thank you @Rawa!

PS @Bruce Pennington if you happen to come across any sources from articles/books/etc that talks about using fabric/paper underneath the ray skin, I would really appreciate it too.

That's a great idea @Bruce Pennington. Thank you.

Thanks John. Why do all these videos of people wrapping the ray skin around the sword handle show them doing it directly? Is this a method that is no longer in use (putting paper underneath)? In my research I only see people using washi paper under the thread wrapping, AFTER the ray skin has been glued on. If you have any source or reading material that I can look at, about using fabric under the ray skin, please let me know, I'm very curious and want to know more, especially if this reflects changes in craftsmanship over time.

Hello all, I'm currently studying this object in my conservation postgrad. Apparently it belonged to a friend of one of the department's contacts at our university. I know it's a ceremonial naval dirk, likely made after 1914, but we're wondering what is this fibrous material that can be observed from the exposed end of the hilt? I can't find any examples of any hilt makers using any paper or fabric underneath the ray skin, usually it's glued directly onto the wood, right? So what could this material be? Is this the underside of the ray skin itself that's deteriorated, or something else? Managed to take a decent picture of how it looks under a pocket microscope's magnification (60-120x). Any thoughts? Guesses? Thank you so much in advance for your help!