Many of the other items unearthed at Sanxingdui were crafted from jade and ivory, as well as bronze and gold.
These include bronze figurines, jade knives, ceremonial vessels known as “zun” and more than 140 elephant tusks.
Since excavations began at the site in October last year, archaeologists have found nearly 2,000 artefacts.
Sanxingdui has been a source of fascinating discoveries since the late Eighties when archaeologists first stumbled upon a ceremonial pit filled with more than 1,000 items.
Most famously, excavators retrieved a number of highly decorative bronze masks and carved statues with alien-like features.