Ancient COINS refers to the ancient currency.

古钱币指古代货币。

youdao

Ancient South American civilisations prized them so much for their medicinal and aphrodisiacal properties, they even used them as currency.

古代南美文明对于其药用价值相当推崇，甚至将之作为货币进行交换。

youdao

The big stones in the middle of the courtyard are in fact a currency in ancient China —Yuanbao.

院子中央的这块“大石头”实际上是中国古代的一种货币——元宝。

youdao

Bartering is as old as the ancient agora of Athens, when currency took many forms (okay, I had to get that ethnic plug in somewhere).

FORBES: Bartering for Survival - Have I Got A Deal for You

The other idea, equally ancient, is the Classical ideal of a currency that is as stable, predictable, and free of human influence as possible.

FORBES: 40 Years Of Floating Money, 40 Years Of The Average Worker Getting Poorer