Natural Whetstone Nishoteru-yama Aigoto

Natural whetstone, Nisshozan, suitable for sharpening.
I surfaced the raw stone myself.
This is a DIY level by an amateur, so please refrain from purchasing if you are looking for perfection.
There are layer cracks and chips, so the stone has been reinforced with cashew except for the sharpening surface.
It is a stone that easily produces mud and is easy to sharpen, but there is a vein running from the surface to the back that will hit your hand.
It seems difficult to avoid, so please use it by digging into it or in some other way.
As it is a natural stone, there may be veins or inclusions that were not apparent during my test sharpening.
Please consider this point as well before making a decision.

Maximum length: 200mm
Maximum width: 60mm
Maximum height: 30mm