• This Sept. 21, 2016 photo released by Uruma City Board of Education shows the head of a coin, which is likely dating to the Roman Empire, found with nine other coins during an excavation at Katsuren Castle in Uruma on Japan's southernmost prefectural island of Okinawa. The 10 copper coins were unearthed in December 2013 at the 12th-15th century Katsuren Castle, a UNESCO World Heritage site, during an annual excavation for study and tourism promotion by the board of education in Uruma, a city in central Okinawa. While the find has yet to be submitted for publication in an academic journal, an outside expert is convinced that the coins are real. (Uruma City Board of Education via AP)

    Roman coins ID’d in Japanese ruins, but their origin baffles

    TOKYO (AP) — The eyes of a visiting archaeologist lit up when he was shown the 10 tiny, tarnished discs that had sat unnoticed in storage for two and a half years at a dig on a southern Japan island.