上个世纪的那场“文化大革命”,是中国历史上的一个特殊时期。其间发行的邮票很多已成为新中国邮票中的珍品。而这一时期的实寄封,由于保存下来的不多,更是成为不可多得的现代文物。在集邮界,有不少集邮爱好者珍爱它、保存它、研究它。一些地区还成立了专门的民间研究组织,还有不少不集邮的老知青也喜欢保存它,因为它记录着他们那段不可忘却的青春历程,国外集邮者和港、澳、台集邮人士也对它爱不释手。不法邮商见有利可图,便制假贩假,近一时期似乎 The “Cultural Revolution” of the last century was a special period in Chinese history. Many stamps issued during this period have become treasures in the new China stamps. However, the actual posting of this period, due to the small preservation, is becoming a rare modern cultural relics. In the philatelic community, many philatelists cherish it, save it and study it. Some areas also set up special private research organizations. Many of the non-collecting old educated youth also like to save it because it records their unforgettable youth. Foreign philatelists and Hong Kong, Macao and Taiwan philatelists also Love it. Illegal mail see the profit, it is made of counterfeit goods, the recent period seems