回复：一个题外话向诸位请教，请班主暂时别删

来源: 于 2006-04-12 08:02:29 [旧帖] [给我悄悄话] 本文已被阅读：次

Google 'US currency error', 'Error Note' or 'misprint'.

Or you can go to a library and read on books like 'The official blackbook price guide to US paper money', 'United States Paper Money Erros', etc.