1894 CHINA (ERROR), ICHANG TREATY PORT, 2 CANDARINS STAMP, Mint. S PRINTED GUM S Posted on October 31, 2024 by admin 1894 CHINA (ERROR), ICHANG. ICHANG TREATY PORT issue. OVERPRINTED 2 CANDARINS STAMP. ERROR – STAMP PRINTED ON GUMMED SIDE ERROR (see pic). Rare And Collectible stamp.