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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.
Although iron and lead were in use by the era of the ancient Romans, copper, bronze, and brass (an alloy of copper and zinc) were used by the Romans for coins, aspects of architecture such as doors, and some parts of their extensive plumbing system (although pipes were made of lead).