Before 1982, it's 95% Cu and 5% Zn.

LAChinese · 2011-08-23 16:12:49Z

Before 1982, it's 95% Cu and 5% Zn.简介

来源: LAChinese 于 2011-08-23 16:12:49 [档案] [旧帖] [给我悄悄话] 阅读数 : 0 (0 bytes)

本文内容已被 [ LAChinese ] 在 2011-08-23 18:32:36 编辑过。如有问题，请报告版主或论坛管理删除.

回答: 美国的1分硬币是锌(镀铜)的由 mw! 于 2011-08-23 16:05:48

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