Japanese Tachi 3step Temper Master Sword

Perfect example of a tachi sword, tried to separate handle from tang but it's pretty much on there, so can't say if its signed or not. Razor sharp edge as you can see in the last two pictures, slipped out of my hand and I tried to catch it and it got me on my finger, clean slice. Perfect hamon lines and will not balance out on its slicing line but will lay flat on its side blade side as shown in pictures, weird.