30 Unusual Archaeological Finds In The US We Still Can’t Explain

17. NORSE COIN IN AMERICA

Archaeologists are baffled by a coin uncovered in 1957 at a Native American settlement in Maine. Archaeologists identified the currency as a 12th-century British penny, but after further investigation, British researchers say the coin is orse. It’s odd as it’s the only pre-Columbian Norse artifact found in America. The coin appears to be about 1000 years old, and theories suggest it shows contact between early Norse settlers and mainland Native Americans. If true, it’ll change the time frame of the first contact.