Assertion: bi metallic coin | /r/HasProperty | issued for long time
Facets:
value: with known examples
type: OTHER
Source sentences:
text: Bi-metallic coins have been issued for a long time, with known examples dating from the 17th century, while the Roman Empire issued special-occasion, large medallions with a center of bronze or copper and an outer ring of orichalcum, starting with the reign of Hadrian.