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2003年9月,《集邮博览》发表了拙文“赶班信筒”和“黄帽子信筒”。2004年11月北京举办第二届现代邮展,我决定组集参展,就在整理邮集时有二个新发现,现撰文与邮友探讨。
In September 2003, Philatelic Expo published a clumsy “catch letter” and “yellow hat letter”. In November 2004, Beijing held the 2nd Modern Post Show. I decided to set up a group exhibition. There were two new discoveries when finishing the mailing list.