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文8邮票初版和再版的区别，你知道吗？
文8初版和再版的区别这个课题，已经上升到了一个比较专业的高度，经众多资深集邮爱好者长期研究，大致的区分为：厂名颜色、日期名、色标、质检号、盖销戳记日期，具体如何通过上述区分呢？
邮票知识普及28/96
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