20th century
Limestone
RomanCopper alloy
1st-4th century CERomanSilver
18th centuryBritishBronze
1st-2nd millennium CERomanCast bronze
3rd century BCE-3rd century CEChineseSilver
19th centuryAmericanHammered bronze with punched decoration
10th-14th centuryKoreanCopper alloy
1st-5th century CERomanLead
2nd-1st century BCEGreekGilt bronze
3rd century BCE-3rd century CEChineseSteel
19th century