BankNote

KeithHart points out that coins and banknotes graphically represent the dialectic within money. On side shows the value. The abstract amount of money. The alienated, depersonalized power of the market. The other side shows, typically, the ruler's head. Or other national, cultural symbols, representing money as product of the personalized, power structure of society.

See also OnMoney, OnSemiotics, MoneyAsAMedium