Thank you for viewing. This is a great white shark (Carcharodon carcharias) tooth, measuring 45.1mm at its longest point, a very large lower jaw tooth. As a functional tooth of this size, one might imagine it was damaged as a result of biting a large marine mammal or perhaps even a boat? The most common areas of damage on lower jaw teeth are the tip and then the base of the crown, with other areas being rare. This tooth has damage to the base of the crown. It is likely that this tooth was a newly formed functional tooth, and the base of the crown was damaged by a force large enough to break it, but not break the tooth itself. Furthermore, it is thought that even the strong ligaments could not support it, causing a part of the root tip to crumble. The enameloid of the crown shines white, and the serrations are completely undamaged and perfect. Its sharpness and cutting ability are like that of a cutter knife. It's a shame about the damage. Although it's a B-grade item, lower jaw teeth of this size are valuable, and I think they will become increasingly difficult to obtain in the future. Please check the condition in the images.