must realize that coined money was not the sole medium of exchange in
Don't suppose that
actual coins were used, because the transaction was recorded in
monetary terms in some book.
These notations represent
merely the 'standard of value' function of money.
The simple exchange of goods for goods, or the exchange of goods
for services, especially labour services, recorded in monetary terms. Credit
A written promise to pay at some future date, recorded on paper, sometimes
notarized, but often informal.
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