Ключевые слова: antenna, army, background, black, collectible, collection, collector, communication, communications, correspondence, country, date, delivery, history, known, macro, mail, message, micro, national, object, old, opening, overprint, paper, perforation, philatelic, philately, post, postage, postal, postmark, press, print, radio, russia, satellite, service, stamp, symbol, unit, used, ussr, vintage,