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Aes signatum was an ancient form of Roman currency. It consisted of bronze bars, typically stamped with an animal figure. These bars were used as a metal currency in Rome and Italy, predating true coinage.12

The use of aes signatum represented a transitional phase between earlier, unworked bronze lumps (aes rude) and standardized, cast coins (aes grave). While lacking a specific mark of value, these stamped bars served as a recognized medium of exchange. The term aes signatum literally translates to "marked bronze".231

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