穴あな銭せん

noun

perforated coin; coin with a hole

Historical term for coins with a central hole, such as old Chinese-style cash coins or early Japanese coins.

• 博はく物ぶつ館かんで江え戸ど時じ代だいの穴あな銭せんを見みた。

  I saw Edo-period perforated coins at the museum.