You make your way over to the city center, where Atarin is staying. You almost don't recognize him after a few days of proper eating and a bath. He's dressed more scholarly and has had a shave and haircut. He greets you, saying he's still ironing out the details of what is next for his archaeological delve on the coast. You show him the crown, describing the events, and he studies it carefully. His eyes light up and he exclaims.
"Ah... clearly an object from the time of the Earth Mother"
"The Earth Mother..." Herja ponders the name aloud.
"Yes, the proto-deity of Caera. During the Time of Twilight. Before the sun and moon, light and dark, good and evil. Our ancient history. When the separation of these forces shook the world and the Earth Mother sacrificed herself to save Caera and the Sundering occurred - the Godsfall. The creation of Helia, Baarn and all the other deities. Powerful entities that had to gather unto themselves worshipers to validate their power and continue their existences.
In the time of the Earth Mother, she was attended to by the Druun, an order of men who kept the secrets of her worship to themselves. This item is one of their relics. Astounding discovery! I wonder where it came from?
This part here that you have broken off, the oak tree with a face, this signifies dreams and portents. A druunic priest would have probably used this crown to speak to their deity and receive visions. To an unskilled person, this could have produced dire nightmares and uncontrolled wild magic side effects.
Even now rendered useless, it is a highly desirable artifact. I would suspect it would fetch 1,000 gold pieces from the right people. Some people within my circles, in fact. I could, for a fee to help fund my research, find a seller for you."