I've done a bit of geneology too. Got my Perkins ancestors back to about 1750 (all in London) then it goes a bit patchy. That little Pfenning is certainy 'in German' so is most probably German, not that Germany existed as one united nation back then. A Stadt is a town and a münz is a coin. The town is no doubt represented by the coat of arms on the other side, but I don't know which it is. Lots and lots of towns, dukedoms, principalities etc all issued there own little coins back then and it makes it all very complicated. The vast majority of the lower copper denominations are of negligble value. Please do contact me when you are selling any coins (mainly British but I'm also not fussed about nice Europeans).