An auction worker holds an ancient Roman coin in London, England. (AP)
The gold coin is from A.D. 293-296. (AP)
This coin was discovered in a field in Kent, England. It is no bigger than a penny. (AP)
The back shows two prisoners kneeling at the feet of the false god Apollo. (AP)
Workers handle the coin with cotton gloves. Oil from hands is bad for the metal. (AP)
A man in England hunts for metal. He looked in a field.
Buzz-buzz! He found a very old gold coin!
He sold the coin. Someone paid seven hundred thousand dollars for it! That was a record.