And by Kruegerands I mean gold and silver. Not all large denomination but little ingots too for small barter.
When the ship hits the fan, greenbacks will be used for wallpaper and bit coins will be nonexistent as the web will be a memory.
If/when the SHTF it will be the people with the skills and means to provide food and protection that will be raking in the gold, silver, other precious metals, diamonds and anything else of value.
Plant and grow 1# of seeds and you will get 10#s of gold.