Welcome to CT. All I can tell you is you have an ancient coin. Seriously, CT has a good number of ancient collectors so wait for there opinions. They have me close to my first purchase of an ancient coin but they'll never convert me, though they try.
Hi Zenker ! In your upper picture, starting from about 12 o'clock you can read "CIVITAS", so this is some city coinage. The name of the city is after Civitas and looks like somethink like "Horn". Now Horn is a city in Germany in the former principality of Lippe. The coat of arms of Lippe is a five petalled Rose. So could be a good fit. A lot of the Lippe rulers were named "Bernhard" That could be a match with the start of the margin legend in your lower picture. But it is not exactly clear. So my suggestion: Some medieval city pfenning of the city of Horn in Lippe, Germany, under the rule of Bernhard. Exact type to be determined.
