Crown

This crown was found within a room leading to the basement of Vega's Castle in Prague. It was resting on a pedestal in a rat-infested chamber. When Indiana Jones took it, sections of the floor opened up and released poisonous gas into the room. Indy managed to escape the death trap by rolling under the descending door and into the castle basement. He then gave the crown to the Mysterious Statue and used it as the first item to solve the Astrological Clock puzzle.