Thanks for your response. I know so little about this subject that I am going to have to read some to understand it. As to your question, I posted pictures of both sides of the tang. If there is a date, I guess it would be in the second picture. If not a date, I would like to know what it does say.
After reading your post, I read through John Yumoto's book and the physical characteristics of the blade and handle seem consistent with an old sword. There are a couple things that seem inconsistent, though. The loop at the base of the handle is not centered and is not connected to the kashira. It is fitted into holes in the wood handle. The WWII swords I have seen in pictures all seem to have a loop for a tassel and older ones do not. The scabbard is lacquered, but it has the remains of a leather cover on the tip and there is a brass loop attached by a leather binding at the top. Are these signs that an old sword was refitted to meet Japanese Army standards so that it could be taken into combat?
I realize that I have strayed somewhat from translation. Let me know if I am too far off topic.
Bruce E.