Ключевые слова: africa, aged, antique, britain, british, canceled, collection, commemorative, correspondence, david, david livingstone, england, explorer, famous, great, great britain, hobby, isolated, issue, kingdom, letter, livingstone, macro, mail, male, man, map, medical, missionary, office, old, paper, perforated, philately, post, postage, postal, postmark, retro, shipping, stamp, united, united kingdom, used, vintage,