Legion Aureus

Legion Aureus is a type of currency in Fallout: New Vegas.

Gameplay
The aureus has a portrait of Caesar on one side and a symbol of a bull on the other. The inscriptions are "Aeternit Imperi" on the front and "Pax Per Bellum" on the back. The exchange rate is 4 bottle caps to 1 denarius, and 100 bottle caps to 1 aureus.

Locations
The Legion Aureus is the rarest form of currency in the Mojave Wasteland, and can only be found in a limited number of locations.
 * Ten are given by Caesar for healing him in Et Tumor, Brute?
 * Caesar's praetorian guard typically carry two each.
 * Bloodborne cave, two inside a trunk behind a locked gate.
 * Carried by Lucius and the weather station guard.
 * Casinos can pay out the player character's chips in Legion currency, with every hundred chips being traded for an Aureus.