@wallet, nice coin! I agree with @bob and @pertinax that it is from the German City of Goslar. This denar was minted under Otto III between 983 and 1002 AD. The attribution is Bonhof 294.
"It certainly strikes the beholder with astonishment, to perceive what vast difficulties can be overcome by the pigmy arms of little mortal man, aided by science and directed by superior skill." --Henry VIII