Definizione

• A name given to certain Roman tokens or small medallions which can always be readily distinguished by a groove encircling the entire planchet. They were first issued about the time of Constantine the Great and were continued until the close of the fifth century.

  Their use has not been definitely deter- mined. It is supposed that they were em- ployed at the public games in the allot- ment of prizes, or that they were used as counters in games of chance. See Numis- matic Chronicle, 1906 (p. 232).

Fonte

• Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)

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