Headpiece to the Staff of Ra

The Staff of Ra is a staff five kadams high that, when topped with its headpiece can be placed in the Map Room at Tanis to reveal the location of the Well of the Souls. The actual staff is apparently long lost to history, but the headpiece contains instructions no how high to make a substitute staff.

The headpiece somehow fell into the hands of Marion Ravenwood, who gave it Indiana Jones (for several thousand dollars) when he was searching for the Ark of the Covenant in 1936.