Post-apocalyptic Gold Reserves

[Targan]

If CivGov wanted to keep using Greenbacks, perhaps they'd try to control the amount of their own "official" currency in circulation by stamping existing pre-war paper money with a particular pattern and a particular kind of ink. Not foolproof obviously, but better than having local economies disrupted every time a bunch of bandits manages to break into an abandoned bank vault or armored car.