noun ダウンロード 🔗共有 不良貨幣、エラーコイン A coin that is defective, having been incorrectly minted, often prized by collectors. Examples : "Maria's coin collection included a rare "fido" – a penny with Abraham Lincoln's head stamped slightly off-center. " business finance value item AIとチャット語彙ゲーム読解練習