This Koto Reverse Blade Katana, also known as Sakaboto Blade.   For those unfamiliar with the reverse blade katana, the sharp side is opposite where you would normally expect it, while the normal cutting side, is the wide unsharpened portion of the blade. 

The Koto Sword is a full size katana, a full 44 inches long.  Blade is 440 stainless with the Koto symbol on the wood scabbard