Here is a link to a shop selling an authentic version of that coin:
http://www.ma-shops.com/linnartz/it...5007&lang=enIt looks like it's trying to be a 1760 Bavaria Thaler coin, but it doesn't match up with the ones I see in the Krause manual or I see for sale in MA-shops. The coin is supposed to be silver. That coloring doesn't look right, even for toned silver. Then the coin is too round and perfectly centered for a coin from 1760. In addition, it has dots that go all the way around the border and authentic coins have that hashed (not sure the right word for it) edge. The edge/border is just not like any of the German thalers from that time period. The image of the madonna with child don't match the book examples of the coin, and don't seem similar to any other madonna thalers I've seen. They were made for many many years by Bavaria with a few different types. I hate to say it, but the whole coin just looks wrong to me.
There were Bavarian gold coins from that year that were minted, Ducats. But they have a totally different design and didn't have the madonna on them.
I am not an expert on these coins specifically, but having looked at even a few madonna thalers, this stands out as being some sort of fake. I don't know much more than that, maybe someone else could chime in.