“The Legion is aware of your mercenary ways and has decided to encourage you work for us rather than against us. I've provided you the location of a drop box. Every few days, we'll place Legion coin inside.”
The disguised frumentarius is a spy and messenger. He will appear if the Courier has a positive Legion reputation to offer incentives to remain in Caesar's good graces.
"The Legion is aware of your mercenary ways and has decided to encourage you work for us rather than against us. I've provided you the location of a drop box. Every few days, we'll place Legion coin inside. "
"Though you aren't of the Legion, you've aided us more than once. We acquire many items on our raids, some useless to us, some forbidden. I've provided you the location of a drop box where you can obtain these items. The box will be replenished every few days. Please be aware that we'll assume any items left in the box will be unwanted and be removed and destroyed."
PC The frumentarius may never appear in the game at all, even if the Courier has a positive Legion reputation. [verified]
PC A possible fix for this bug may be to use the console command player.placeleveledactoratme 15d42f. This will clone the frumentarius and place him where you are, allowing you to talk to him.
PC Other possible fix for this bug may be to use the console commands prid 164ed0, disable, enable, resurrect, moveto player and player.moveto 164ed0, in that order. This will revive the frumentarius and place him where you are, allowing you to talk to him.