the signature does match the one from above, however, the one above has two additional characters that my blade doesn't have. does it make sense that he would have shortened what was inscribed on my blade because it is a much smaller piece and cannot fit those characters in the inscription? my wife, who is chinese, can make out some of the characters and told me that Japanese written language was heavily influence/borrowed from the chinese. hence the older the insciption, the more it looks like chinese.
i'm planning to take the sword to st. augustine to the Southeast Japnese Sword Show and Auction in february to submit it for shinsa.