What is special about the 2,000-year-old national treasure at the billion-dollar museum in Yen Bai?

Hop Minh bronze jar, one of the largest and most beautifully decorated bronze jars of the Dong Son culture, is currently preserved at Yen Bai Provincial Museum.

The jar is about 2,000 - 2,500 years old, 47.4 cm high, weighs 13.5 kg, was cast in a two-piece mold and has a rusty green color. Spectral analysis results at the Institute of Geology of the National Center for Natural Sciences and Technology show the following ratios: Copper: 64.92%; Lead: 0.9%; Tin: 0.72%; Cadmium: 0.1%; Aluminum: 0.02%; Silicon: 0.017%. The results show that Copper, Lead, Tin is a typical alloy of the Dong Son culture in the Yen Bai mountains.

Source: https://www.baogiaothong.vn/bao-vat-quoc-gia-2000-tuoi-tai-bao-tang-tram-ti-o-yen-bai-dac-biet-the-nao-19225021117132298.htm