Assertion: gold's use | /r/HasAspect | long history
Facets:
value: at on silver
type: LOCATION
Source sentences:
text: The use of hallmarks, at first on silver, has a long history dating back to the 4th century AD—there is evidence of silver bars marked under authority of the Emperor Augustinian[clarification needed] around AD 350—and represents the oldest known form of consumer protection.