I was at our local flea market and spotted the this tanto laying on the ground amid socket wrenches and broken vacuum cleaners. The seller quoted me a price equal to a couple of happy meals, so I bought it and brought it home to do some research.
While I've collected antique knives for many years, I'm a novice when it comes to Japanese blades. But one thing I've learned about old knives is 'when in doubt, do nothing". Having seen a few of the Chinese fakes recently, I was pretty sure this one was a real Japanese blade. My question was, by whom and how old.
After posting shots of the tang engraving on a couple of Asian arts boards I was told that the two characters could be translated in several possible ways, including: Masamitsu, Masako, Masateru and Seiko. After a bit of Google searching I could only find Masamitsu and Masateru as known swordsmiths. The following link turned up a tanto by Masateru that appears to my untrained eye as very similar to my sword (in much better polish), but the second kanji of Masateru blades don't match with that on my tanto.
http://www.tetsugendo.com/swords/Tan_117_masateru.html
I did some searching for Masamitsu, and found at least three smiths that signed with the same characters as my example, with production dates ranging from 14th century to 20th century.
So I'm asking for any comments and opinions on my tanto, concerning age, authenticity and condition. The blade is missing about 1/16" off its tip. And it has miscellaneous shallow scuffs and scratches, and the hamon is rather faded. I'd like to know if the tanto is a candidate for a re-polish or if it would make more sense to leave it as-is. I'm hoping that identification will help answer that question. Of course, I know that the signature may mean nothing. (Anyone can mark any blade with any name).
So I'll shut up now and post some pictures. Thanks for your help.
Dan