numismatic

她对钱币学很感兴趣，收藏了许多古代钱币。

She has a keen interest in ___numismatic studies and collects many ancient coins.

他对硬币的历史价值感兴趣，参加了当地的古钱币收藏俱乐部。

He joined a local ___numismatic club because he was fascinated by the historical value of coins.