Ключевые слова: address, anniversary, art, background, black, building, canceled, cancellation, china, chinese, closeup, collecting, collection, commemorative, grunge, hobby, interest, interesting, isolated, language, letter, long march, luding bridge, macro, mail, material, message, paper, perforation, philately, post, postage, postal, postcard, postmark, printed matter, red army, retro, river, seal, stain, stamp, texture, used, victory, war, white, zigzag,