Legion Denarius

Legion Denarius is a Miscellaneous item that appears in Fallout: New Vegas, it is a 'currency' and can be used in 12 gauge shotgun shell as a coin shot, which is worth considerably more than a regular shell. It can be also traded for Poker chips in any of the casinos.

Background
Legion Denarius is the currency used by Caesar's Legion.

Locations
Legion Denarius can be found on most members of Caesar's Legion. Large amounts of them can be repeatedly found for the quest Caesar's Favor.