Hi, German coins do have different mintmarks, depending on the differnt mints where this coins are produced. For your coin, once you did not show the mintmark, the combined amount of all that particular coin, is around
30.000.000 pieces. So you see it is not rare. The value is exactly 2 euro.
Shop in Netherlands sells only variant that looks like proof based on their images. Shop in Germany sells all five variants, but they ask for double nominal value.