Popa, who was a postdoctoral researcher there, compared the weights of more than 5,000 Bronze Age rings, ribs and blades, sourced from over 100 hoards that contained five or more items.
While the ribs and ax blades are not quite as uniform, the study concludes that the artifacts are similar enough to collectively demonstrate “the earliest development of commodity money in prehistoric Central Europe.â€.
As bronze smithing spread through Europe, these rings, ribs and ax blades were cast for functional purposes — such as jewelry and tools — that might have been unrelated to money.The bronze items mirror forms of currency based on tools, known as utensil money, discovered elsewhere, such as knife and spade money found in China and Aztec hoe and ax money found in Mesoamerica.
“Simply put, you don’t need a weight system to be able to use metals — or any other commodity — as money,†he said, adding that many other less durable things may have been used as money before these bronze items.