Archaeologists have discovered a 500-year-old shipwreck off Oman that was part of a fleet led by 16th-century Portuguese explorer Vasco da Gama during his second voyage to India.
Amid the debris of the wreck, divers found a trove of rare artifacts.
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The ship is believed to be the Esmeralda, which sank during a violent storm near al-Hallaniyah Island in the Indian Ocean in May 1503.
Divers exploring the wreck found this copper-alloy disc marked with the Portuguese royal coat of arms and a personal emblem of King of Portugal Dom Manuel I.
Among the rarest finds was this silver coin, called the Indio, commissioned by Dom Manuel in 1499, specifically for trade with India. The coins were forged in 1499 after da Gama's first voyage to India.
There is only one other known coin like it in the world.