Caesar's Favor

 is a repeatable quest in Fallout: New Vegas.

Walkthrough
A disguised legionnaire (Disguised Frumentarius) will come to the Courier and tell them that they have been faithful to Caesar, and are now allowed to make use of a Legion supply cache which is periodically replenished by Legion members. He then departs.

The player is given a quest marker which leads to the cache, located on a rock ledge south of the Sniper's Nest overlooking Cottonwood Cove. The quest is "completed" once the player has opened any one of the eight metal boxes located on the ledge.

This quest is recurring: the quest will re-appear approximately every three days, complete with a new quest marker guiding the player to the cache, so long as the Courier's reputation with Caesar's Legion is positive.

Cache contents
The eight boxes are split up into two groups:

Five boxes are located on the west side of the ledge. These boxes are labeled "Legion Dropbox" and contain Legion Denarii in varying amounts between 10 and 125 Denarii apiece.

Three boxes are located on the east side of the ledge, overlooking Cottonwood Cove, and are labeled "Legion Supply Cache". The northern-most box contains various aid items, including a minimum of five Doctor's Bags. The other two boxes contain random weapons, armor, and/or ammunition.