1956 - 2015 (approximate. ), world, mint never hinged and cancelled inventory, as well UNO, set \"flags the United nations\" stamps and covers, in addition to it isolates flag sheetlet, modern issues CEPT with Partner countries / colonies on stock cards, with also unperforated values and so on, as well inventory covers CEPT and UNO as well modern air mail letters, especially from the commercial usage start the 2000er years, but also a few first flight documents from the second half of the 20th century, manifold inventory in a small box