The Greeks commemorated events, like the defeat of the Persians on coins, but they were more in the high value NCLT category that most commems today fall into. The Urbs Roma commems in the time of Constantine were monumental in that they were minted in dozens of mints throughout the Roman Empire and circulated on a much wider scale, these were lower value actual circulating coins that Marco or Julius took to the market to buy olive oil or pan with.