@wallet, the cross-hatching on the building sure looks like the rev of a 13th Century Cologne Denar. See mine from Konrad von Hochstaden for comparison (Bohnhoff 659):
Added: ok I'm now almost positive that your coin is from the German Archbishopric of Cologne, but would attribute it as either Hävernick 41 (AD 1244-1261) or Hävernick 799 (AD 1238-1261). Both have very similar design features, but the Hae 41 is larger (1.37g and roughly 20 mm in diameter). Your coin has been clipped along the edge and has that wedge crack, but seems most likely that it started out less than this. My best guess is that your is a Hae 799.
"The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz