This wonderful old copper has a lot going for it. For starters, it is old, from a long defunct mining district. German coppers of such size and heft are extremely rare and hard to come by! It has a great colliform sculptural quality about it and there are literally hundreds of 2-3 mm crystals comprising it, all of which have great patina. Lastly, the specimen stands nicely upright for display on its own. I do not have a mine name, sadly, but perhaps with some work that can be determined by help from some of the German collectors.