1900 - 1980 (approximate. ), predominantly mint never hinged, anlageartig made up inventory, often in still unpacked philatelic agency deliveries from 1960 / 1980, always multiple in different quantities related right up to sheet / -parts, in total over 1.000.- CHF face value, in addition to it First Day Cover and a few hundred pre-war documents, often philatelic letters with good special stamps frankings, high quality inventory from collector's estate