noun
old coin; ancient coin
Refers to coins from past eras, often collected or studied for their historical value.
祖父は古銭を集めるのが趣味だ。
My grandfather's hobby is collecting old coins.
この古銭は江戸時代のものだ。
This old coin is from the Edo period.
Compound of 古 (old) and 銭 (coin). The variant 古泉 uses 泉, which historically could also mean 'coin' due to the association of coins with flowing wealth.