A coin is a small, flat, usually, round piece of metal or plastic used primarily as a medium of exchange or legal tender. They are standardized in weight, and produced in large quantities at a mint in order to facilitate trade. They are most often issued by a government.
The Heinrich-Heine-Universität Düsseldorf (capital of the National State of North Rhine-Westfalia) holds one of the biggest and most comprehensive numismatic collections of ancient coins and medallions at University level in Germany. The core of the collection is represented by some 8,000 coins supplemented by considerable holdings of casts of coins from Asia minor of the Hellenistic (Greek) and Roman Imperial periods.
Since 2009 the University of Konstanz houses a small collection of ancient coins, all donated by private sponsors. The focus lies on coins from late antiquity, but some of the ca. 150 objects derive from the early and higher Roman Empire as well. The collection is used for teaching purposes in particular.
An individual who issued coins at the ancient city of Priene c. AD 193-211. Lit.: K. Regling, Die Münzen von Priene (1927) p. 157; W. Leschhorn, Lexikon der Aufschriften auf griechischen Münzen II (2009) p. 349.