古こ銭せん学がく者しゃ

noun

numismatist

A scholar or expert who studies coins and currency, often from a historical perspective.

• 彼かれは有ゆう名めいな古こ銭せん学がく者しゃで、古こ代だいローマの硬こう貨かを専せん門もんにしている。

  He is a famous numismatist, specializing in ancient Roman coins.