Mark of Caesar

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

Characteristics
Given to the player by Vulpes Inculta 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. Without the mark the player cannot complete The House Always Wins.

Bugs

 * Caesar's Legion may still be hostile towards the player, even when carrying the Mark of Caesar. This occurs when the PC travels with a companion that is hostile towards the Legion (I.E. Craig Boone).


 * They will also be hostile if you are wearing another faction's clothing while wearing the Mark of Caesar (I.E. NCR).


 * There's also a bug where the legion will be hostile even without having any companions or faction specific clothing on. I am vilified with them though, but it says that Mark of Caesar will turn them friendly inspite of that.