The Torah is full with money statements - such as acquisitions, donations, fines and payments, presenting different names and values for money - such as Shekel, Sela, Kesef, Ksitah and more. But the Torah was given on Mt Sinay and spoke "the language of the people". If I understand right, the only "money" Jews had at that time was Egyptian.
The Talmud is full with discussions about currencies and money (see Kiddushin 11, B"M and more). Many of those currencies practiced in Greece and Babylon, but the Talmud makes bold statements about the ancient (pre second-temple era) generations, up to Moses, using the same currencies, including statements of Abraham, Yacov, Yehoshua issuing coins (B"K 97).
I've checked numerous sources, but all of them assign implementation of coins as currency (as opposite of weight) to at earliest 8th century BCE, which is approximately in the middle of the first temple period. Therefore, no currency in ancient Egypt, no currency in the desert, no currency during Moses, Yehoshua, Zkenim, even Kings David and Salomon didn't have it.
How do we reconcile those facts?