Ключевые слова: 1961, aged, ancient, antique, communist, emblem, envelope, equipment, factory, female, hammer, historic, industry, labor, letter, mail, male, man, manufacturing, message, old, people, philately, plant, postage, postcard, postmark, production, retro, russia, russian, seal, sickle, sign, soviet, stamp, symbol, team, uniform, union, ussr, vintage, woman, worker, young, youth,