By the eagle i would guess its russian or German and the date is 1665 kind of mideval times.The other coins are nice also the eagle cents and those cartwheels.
Have no idea about this one its beat to hell!!!and holed use it as a necklace or put it in a Keychain its cool.
My Father, the man in the avatar, was an avid detectorist from the 60s-90s. He found lots of silver, gold and precious stones. It was the "heyday" of metal detecting. The machines were not advanced, but that generation got the best out of the ground, because they were the first.