Ключевые слова: background, biology, botany, card, chamomile, closeup, collection, communication, correspondence, cuba, daisy, deliver, flora, flower, green, hobby, international, leaf, letter, mail, nature, obsolete, package, paper, past, philatelic, philately, post, postage, postal, postcard, postmark, revival, send, stained, stamp, vintage, watermark, white, yellow,