Silver dishes were used by the Sasanian kings as diplomatic gifts.

Evidence

Silver dishes like this one were used by the Sasanian kings in vast quantities, sent as diplomatic gifts across the whole of Asia. — Neil MacGregor, A History of the World in 100 Objects, 691

Categorization

• corroborated: 2 independent passages support this claim — Neil MacGregor, A History of the World in 100 Objects, 691