Ключевые слова: aged, antique, cancelled, collection, commemorative, communication, communism, communist, correspondence, ddr, east, flags, german, german democratic republic, head, hobby, isolated, issue, lenin, letter, macro, mail, male, man, marxist, office, old, paper, perforated, philately, political, politician, portrait, post, postage, postal, postmark, red, retro, revolutionary, shipping, socialism, socialist, stamp, theorist, used, vintage, vladimir,