From shells and giant stones to tobacco, clay tablets and grain, a huge range of media have functioned as currency.
These include the variety of regional coinage used in the middle ages, the labour notes in the late 19th century and the many examples of scrip money used in the USA and Europe, particularly in the decade sandwiched between the World Wars and during the Great Depression.
Indeed, when thinking about money and currencies – what they are, what they do, where they originated – it becomes difficult to know where to draw the line.
# See also - Contents - People Powered Money