Seal of the Lords
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Commander Adama normally wears a peculiar medallion with his commander's robes.
He explains to Colonel Tigh that the medallion is a symbol of the Colonial faith as well as a symbol of power.
On Kobol, in search of answers to the whereabouts of Earth, Commander Adama uses the medallion as a key that opens the tomb of the Ninth Lord of Kobol (Lost Planet of the Gods, Part II).
Note
Adama's medallion is analogous to the Arrow of Apollo in the Re-imagined Series story arc. As in "Lost Planet of the Gods," the new series' characters also search for the way to Earth by accessing another ancient tomb of a Lord of Kobol, where the Arrow is the key to the data in the episode, "Home, Part II."