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
Julius Friedländer (numismatist) Julius Friedländer (numismatist) Eduard Julius Theodor Julius Friedländer (June 25, 1813 – April 4, 1884) was a German numismatist. He was born on June 25, 1813 in Berlin. Friedländer's entire family embraced Protestant Christianity in 1820. After studying at the universities of Bonn and Berlin, and traveling in Italy (1838–1839), he obtained a position at the "Königliche Sammlung der Antiken-Münzen" in Berlin in 1840. During his travels to Italy (1844–1847) with his friend Theodor Mommsen he acquired further numismatic material which he brought to Berlin. In 1868 he became director of the numismatic section of the Berlin Museum. In 1872