The Eye of Al N'Set
This powerful magical amulet was stolen from the Persian National Museum of Antiquities by agents for New World Incorporated. It was found by the Investigators in the rooms of Elias Kingsley, the man who had been sent to steal Hosiah's Spectacles.

In the real world, it is a sterling silver amulet with a glass eye which was purchased in New York City at a shop called Magickal Childe several years before the game was played.