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Image Source. The most disturbing of the ancient currencies may be dolphin teeth, which were used in the Solomon Islands for hundreds of years, in keeping with timeworn traditions. In 2008 the islandâs dollar currency became devalued.
Historical ingots. 1  Ancient copper ingot from Zakros, Crete. 2  Molds for Chinese sycee, a form of silver and gold ingots used as currency under the empire. 3  Lead ingots from Roman Britain on display at the Wells and Mendip Museum. 4  Pig iron ingot from Norrhyttan, Dalarna, Sweden.