Cassiusgroschen Publique Deposited
The name given to a silver Grosehen of Bonn which has on the reverse a view of the church of St. Cas- sius, the patron saint of the city. They were issued under Archbishop Henry II, Earl of Virmeburg (1304-1332).
- Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)