English
No example of a barter economy, pure and simple, has ever been described, let alone the emergence from it of money; all available ethnography suggests that there never has been such a thing Caroline Humphrey, Barter and Economic Disintegration (1985)

Cash

What part of the total money supply is physical cash, i.e. coins and banknotes? How did that ratio evolve in Greece from 1836 to 1999?