Imaging techniques have revealed that an ancient sword recently smuggled into Britain has been modified by modern forgers, with much of the original iron blade replaced by a bronze sword. Additionally, many similar swords in museums around the world may also have been contaminated by modern forgeries.
The sword in question comes from present-day Iran and dates back to an important period in history: the end of the Bronze Age and the beginning of the Iron Age. As the name suggests, this marked a technological change when iron became a metal.
Source: www.newscientist.com