White-thighed Hornbill skull

Genuine skull from a White-thighed Hornbill. Comes with a hangtag that has the common name on one side and the scientific name on the other side. There is a spot on the horn that looks like it is dented in. I am unsure if this is pre- or post-mortem. the skull is approximately 7" long x 4" tall, and the lower jaw is not attached.