“Everyone knows, if nothing else, that commodities have a common value-form which contrasts I the most striking manner with the motley natural forms of their use-values. I refer to the money-form. Now, however, we have to perform a task never even attempted by bourgeois economics. That is, we have to show the origin of this money-form… When this is done, the mystery of money will immediately disappear.” Page 139
How does Marx explain the origin of the money-form of value?
(Please at least include examples below)