Well, gee, another Tenmei dated Kunikane. I suppose some people like them, and I'd take it if you were going to drop it off at the Goodwill.....
But seriously, ... a very nice, shinshinto tanto by the guy who was setting out to revitalize the Kunikane line. The "line" had been maintained between the 5th and 9th generations, but without leadership or - I think - actually continuity. It was officially recognized and everybody knew how to do masame. Number 10 started an apprenticeship in Sendai but then went down to Edo is like 1778 or so and started work with Masahide. He actually ko-signed at least one blade with Masahide so there were no flies on him, BUT he died in Tenmei 6, which is like 1786 when he was 29. The Kunikane line just couldn't catch a break.
Tom's assessment is perceptive and interesting. There certainly were lots of re-signed blades created with, for, and about Kunikane. There were guys in Edo who made high-contrast masame during the shin-shinto era. Whoever made it (and I'd bet on KK 10) this looks like classic, late Edo period carry sword - flashy, famous, and real good. Kind of over the top.
Peter