Ключевые слова: 20, 1934, 1978, aircraft, antique, art, aviation, circa, correspondence, design, envelope, fighter plane, heritage, historic, history, hobby, houses, i16, issue, letter, mail, national, old, philatelic, philately, post, postage, postage stamp image, postal, postmark, russia, russian aircraft, soviet union, stamp, transportation, ussr, vintage,