Hi everyone,
I thought, if I may, I might throw in my 2 cents.
I have seen a few blades such as this (better quality of blade, but less deliberately carved mei) offered by a couple of chinese sellers on eBay.
Although each of them vows it is a gendaito (traditionally handforged of tamahagane), I have serious doubts about this.
I managed to catch out a tanto auction, where almost the exact blade, exact signature was auctioned about 1 month apart. Also, all the blades have approximately the same ko-itame hada, virtually identical shape, and poorly carved signature (with the exception of this one). While I have not tested this, I get the feeling the hamon is very soft, and only slightly harder than the rest of the blade.
Overall I get the feeling, that we may be seeing a new grade of China repro, but I could be wrong. The other thing that throws me in that direction, is that all blades are unmounted, even though one of the sellers offering these every now and then, sells many low grade brass casts of f/k and tsuba (the really cheap-CHEAP made stuff).
Anyhow thats my own conclusions.
James