Ключевые слова: aged, antique, cactus, canceled, collection, commemorative, correspondence, ddr, east, flora, flower, gdr, german, germany, hobby, isolated, issue, letter, macro, mail, nature, office, old, paper, perforated, philately, plant, post, postage, postal, postmark, retro, schwarzii, shipping, species, stamp, succulent, thelocactus, thelocactus schwarzii, used, vintage,