We think this item commemorates activities of Lin Zexu (Wikipedia: “Lin Zexu, courtesy name Yuanfu, was a Chinese scholar-official of the Qing dynasty best known for his role in the First Opium War of 1839–42. He was from Fuzhou, Fujian Province. Lin’s forceful opposition to the opium trade was a primary catalyst for the First Opium War.”  Sorry that our scan doesn’t make any of this very clear.  When fully extended, it is the size of four normal postcards. On one side, the first panel is Chinese-language text and the other three panels are one long artwork of actions during the Opium War that began in 1839.  Now flip this over and the other side shows two panels (in the scan) and the reverses of two cards.  So there are three actual postcards in those four panels, each with pre-printed postage because these come from China Post.  One card (also in the scan) has the “chop” from the Opium War Museum in Dongguan.  Grade: 1