Surprised no-one has mentioned gold coins/bars in this thread yet - almost always crops up as the go to form of currency in doomsday scenarios.
Personally - stockpiling food and medicines would be my preferred choice, as in such a hypothetical situation are likely to be some of the more valuable commodities.
Personally - stockpiling food and medicines would be my preferred choice, as in such a hypothetical situation are likely to be some of the more valuable commodities.