One of these artifacts is expected to be in the sewers of Casbah of Khaibar, likely in The Under-Tomb. The location of the second artifact is suspected to be held somewhere in the Sultan's palace.
The Cup is a bejeweled chalice that, when filled, has miraculous healing properties.
The Talisman has a stylized symbol of the Cup upon it. In the presence of the rightful Sultan of Khaibar, the Talisman glows.