The Crown of Gera is an anime-only artifact that was in the 1999 anime version of Hunter × Hunter.
Bonus Hunter Exam arcEdit
During the treasure hunt in the bonus stage of the third hunter exam, Hanzo finds this treasure in a sunken ship. According to Kurapika, it belonged to Gera the Third, the king who was lost at sea during his coronation in the 16th century. Hanzo trades this in exchange for a room with Kurapika.