Since 2013, a team of archeologists has been excavating Katsuren castle in Okinawa, Japan's southernmost prefecture. Recently ten Roman coins were found at the site.
According to the scientists an Ottoman coin had inscriptions that
dated it to 1687, while the Roman coins appeared to be much older --
from at least 300 to 400 AD.
The finding of these coins confirms speculation that the area of Okinawa had trade relations with the rest of Asia. Archeology is similar to genealogy in that even a tiny find can lead to huge revelations and provide more clues for future research.
Continue reading this archaeological story at Ancient Roman coins found in ruined Japanese castle