Ключевые слова: astrolabe, astronomer, astronomy, communications, cutting, delivery, earth, eastern, europe, face, geometry, global, historic, history, kopernik, letters, mail, mikolaj, nickolas, nicolas, nicolaus, nikolas, olsztyn, picture, planet, poland, post, postage, postal, postmail, postmark, science, silesia, sphere, stamps, thorvaldsen, unique, vintage, warsaw, zigzag,