Mark of Caesar

The Mark of Caesar is a miscellaneous item in Fallout: New Vegas.

Characteristics
It is a necklace given to the player by Vulpes Inculta (or, if Vulpes was killed prior, Alerio takes his place) upon exiting The Tops Casino after completing Ring-a-Ding-Ding as part of the quest Render Unto Caesar, the Mark of Caesar allows safe passage to Caesar's camp even if the player has a low reputation with Caesar's Legion.