19th-20th century
Diam. 24.8 cm (9 3/4 in.)
Iron
19th centuryGermanGold
EtruscanCopper alloy
9th-8th century BCEItalic
Bronze
4th-3rd century BCECopper-tin-antimony alloy
10th-8th century BCEIranianGlass
5th-3rd century BCEChineseIron ground with gold and silver application.
JapaneseCopper alloy
7th-8th centuryAvarCopper alloy
1st millennium BCEEtruscan
Bronze
2nd-1st century BCEBronze
8th century BCEGreek