In an attempt to deter counterfeiters, new features included a watermark of Franklin and optically variable ink that changes color when viewed at different angles.
为了防伪起见，新的特色包括一个弗兰克林的水印和光变油墨，从不同的角度可以看到不同的颜色。
In an attempt to deter counterfeiters, new features included a watermark of Franklin and optically variable ink that changes color when viewed at different angles.
为了防伪起见，新的特色包括一个弗兰克林的水印和光变油墨，从不同的角度可以看到不同的颜色。
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