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 call could be caught. AT&T no longer operates a collect call service for the United States. Competitors include 1-800-COLLECT, which does serve VoIP receivers. Verizon terminated the ability to receive collect calls on its landlines in 2016. Prior to the introduction of the toll-free 800 area code in 1967, Zenith numbers in the U.S. and Canada, and Enterprise numbers in the U.S. only, indicated to an operator that the business agreed to automatically accept collect calls to that number. In the United Kingdom, Freefone numbers provided this service. 1800 Reverse is an international reverse charge service. It allows international reverse charge