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360P
针对藏友提问，特意拍的几段视频，为啥每个银元声音不同（2）
声音，并不能确定银元真伪，仅仅是参考要素之一而已。
钱币验证学习记录184/400
App04:04
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App02:27
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App03:57
App01:33
App01:23
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App07:27
App02:43
App01:07
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App05:58
App02:20
App06:15打开App观看
