Ancient Roman coins found buried under Japanese castle

Ancient Roman coins found buried in the ruins of a Japanese castle have left archaeologists baffled.

A Japanese archaeologist identified 4 Roman coins that dated back to around 400 AD.

The coins were discovered beneath Katsuren Castle on Okinawa Island along with some Ottoman coins.

But Experts are stumped as to how the Roman coins got to Uruma -- they suspect trade but cannot trace an exact route.

One archaeologist said he thought at first they were one-cent coins dropped by U.S. soldiers.

X-ray analysis confirmed one of the coins resembles Roman Emperor Constantine The Great.

While another coin depicts a soldier wielding a spear.

The coins are on display at a Uruma City Historical Museum.

RELATED: Stonehenge and other ancient monuments

Stonehenge and other ancient monuments
See Gallery
Stonehenge and other ancient monuments
Stonehenge pre historic UNESCO World Heritage Site.
Salisbury, UK
A view of Stonehenge in the early morning light
UNSPECIFIED - DECEMBER 10: Mexico, villahermosa, tabasco, Olmec art, Colossal stone head of a warrior (Photo by De Agostini Picture Library/De Agostini/Getty Images)
Aztec calendar stone carving on sand
Chichen Itza
Terracotta Soldiers in Trenches, Mausoleum of Emperor Qin Shi Huang, Xi'an, Shaanxi Province, China
Pyramids, Giza, Egypt
Great Wall Of China Path
Colosseum in Rome in the light of rising sun.
The roots of a massive banyan tree surround a door to an ancient building at Angkor Wat.

Read Full Story

Sign up for Breaking News by AOL to get the latest breaking news alerts and updates delivered straight to your inbox.

Subscribe to our other newsletters

Emails may offer personalized content or ads. Learn more. You may unsubscribe any time.