Support BladeForums! Paid memberships don't see ads! I bought this about a decade ago. It's apparently a 17th century piece (350 year old), as best my memory serves. It had a little corrosion on the blade and the tang had (and still has...I didn't touch the tang) rust on it. There is no maker's signature or any marking on the tang whatsoever, just old dark brownish/black colored corrosion. Something tells me this may have been a longer piece that was cut to make the tanto. To me it seems long for a tanto, about 16" from the end of the tang to the tip, and about 18" with the tsuka on it. Blade thickness at the habuki is just over 1/4". The spine of the blade has what looks like a blade strike on it. I can get pics of that if it interests anyone, but it looks exactly like someone hit it with another blade. There is a very thin, small crack (not photographed, but I can if any interest) on the blade edge. It has a nice black wooden saya, I didn't bother taking pictures of it. After learning to make and polish knives the past few years, I finally mustered up my courage to polish the blade. It was taken to 1500 grit, buffed, and then re-etched to show the hada and hamon. I was simply stunned at the result. The hada and hamon really came out. (I did NOT do anything whatsoever to the tang, it looks like it's a few hundred years old!). The habuki and handle fittings were buffed a little bit, but I was too chicken to unwrap the ito cord and polish the menuki. Maybe at a later date. The tsuba has ornate decorations on it, what appears to be flowers, and a gold plated animal of some sort. The menuki appear to be either an octopus or some sort of sea monster, very hard to tell what they are without unwrapping the ito cord. Anyway, just wanted to share it with you. If anyone has any thoughts on it's history, I am all ears. I guess it goes without saying that photos of the tang would help in that regard, and I can provide them if anyone is interested. Also posted is a pic of my latest project, a tanto/kwaiken with W2 steel, hamon, same' sting ray skin/ito wrap, turks head knot. (always taking orders if you want one!) I have always been an admirer of the art of making Japanese swords and knives, and thought you'd enjoy the photos. Thanks for looking!