Ключевые слова: address, adult, aged, ancient, antique, anton, approval, art, author, canceled, cancelled, card, chekhov, chekov, collection, collector, communication, connection, correspondence, date, delivery, dramatist, envelope, face, federation, global, great, greatest, head, historic, history, hobby, image, intelligent, letter, literature, mail, male, man, mark, message, office, old, paper, pavlovich, payment, people, perforated, perforation, person, philatelist, philately, physician, picture, portrait, post, postage, postal, postcard, postman, postmark, price, print, relationship, retro, russia, russian, seal, serious, stamp, unique, used, vintage, writer, zigzag,