Let's go back for a moment to
We've seen that there were
But how did that money circulate, since there were no checks, plastic cards, banknotes?
In coins of course, well most of it. Silver coins at that, that's where the name for money comes from:
ὁ ἄργυρος, τοῦ ἀργύρου is silver, the metalIf you want more information about coins, go to this site. And if you go to their home page you'll find a lot of interesting information about all sorts of topics relating to ancient Greeks and their way of life. Not just paying their bills.
As for τὸ τάλαντον, that only exists in accounts, there are no "talent" coins or notes in circulation, obviously, no widespread use of paper, so no notes.