日本银茶罐![日本银的图像结果](http://image109.360doc.com/DownloadImg/2017/09/1814/111288733_2_2017091802071772.jpg) The historical challenge of working with silver
in Japan has always been the precious metal’s scarcity. In ancient times,
silver was extracted from local lead, a wasteful and toxic undertaking. More
recently, in the past 250 or so years, Japanese metalsmiths devised ways to
squeeze silver from copper ore.
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