Numismatist noted numismatist who was not an avid collector, and King Farouk I of Egypt was an avid collector who had very little interest in numismatics. Harry Bass by comparison was a noted collector who was also a numismatist. The second group are the coin dealers. Often called professional numismatists, they authenticate or grade coins for commercial purposes. The buying and selling of coin collections by numismatists who are professional dealers advances the study of money, and expert numismatists are consulted by historians, museum curators, and archaeologists. See, for example, the International Association of Professional Numismatists (IAPN) and the British Numismatic
Collect of the Communion service, such as "Common Worship" used in the Church of England or the 1979 "Book of Common Prayer" used in the Episcopal Church in the United States, the "Collect of the Day" follows the "Gloria" and precedes readings from the Bible. Similarly, Lutheran liturgies typically retain traditional collects for each Sunday of the liturgical year. In the newly released "Evangelical Lutheran Worship", however, the set of prayers has been expanded to incorporate different Sunday collects for each year of the lectionary cycle, so that the prayers more closely coordinate with the lectionary scripture readings for the day.