What were the consequences of states printing their own money after the Civil War?

The states and smaller entities printed their own money to finance their local government since there was not a national currency at the time. The problem was that if you stayed in the area, your money more or less kept its value. However, if you moved to another state, your money was worth cents on the dollar, if anything. People were able to get rich trading currencies, though, taking advantage of the varying prices. They did have to travel and timing was everything. A good book on this was written by Simon Winchester,