The treasure, gathered by Alexander the Great and added and subtracted for millenia.
Value:
Incalculable
The treasure of Alexander the great, passed from location to location, until finally it rests in the hands of the Coterie.
(( Proposal for Occult contents for Miss Gladstone: Mirror/Earrings of Helen of Troy. Some artifact to enhance Summon. Some artifact to take over Dominate focus, so you can move yourself. ))
General: Assyrian curse artifacts. Pelloponesian or Trojan artifacts))