实寄封，指的是那些经过邮政部门投递的、盖有各种戳记且贴有邮票的信封。由于其具有重要的邮政史料、组编邮集和收藏研究等多方面价值，目前它已受到越来越多的人们的青睐。在集邮界，实寄封有邮票的命脉之称。因为国际大型邮展中，一部非极限类的传统或者专题类邮集，已要求? Really sealed, refers to those postal delivery department, covered with a variety of stamps and stamps affixed to the envelope. Because of its important postal history, compilation of postal collection and collection of many values, at present it has been more and more people of all ages. In the philatelic circles, it is called the lifeblood of stamps. Because of the international large-scale postal exhibition, a non-limit type of traditional or special type mailing set, has asked?