Katana for comment

[AJ1356]

I had bought this sword about 10 years ago when I was in Japan. I expressed interest in a katana and one of the guys I knew back then took me to an antique dealer and I ended up buy this(the only one I could offord and was nice). It does come with a piece of old paper that the dealer said was the certificate for it. He also said the sword was made by the second best swordsmith and an emperial swordsmith which I think he meant of the Mieji era. Other than that I know nothing about it, have never gotten around to taken it to be appraised or properly cleaned/sharpened. Still very sharp and well balanced, no I don't know how many body balde this is .
comments/info is welcomed