A more recent Bitburger beer mat, which I probably picked up in the U.S. It has some text on the back (in German), which beer drinkers probably do not read. The slogan is much reduced in size.
Bitburger beer is produced in the Eifel region of Germany, not far from the Luxembourg border. It is now third in sales in Germany, and is said to be the largest producer of draft beer. Bitburger is found in many German and other restaurants in the U.S., but this Bierdeckel is probably from Germany. I have geotagged this one with the brewery location.
Bitburger and Warsteiner were said to be first and second a few years ago, but they have been passed by Oettinger and Krombacher. Oettinger, the top seller, is sold on price, almost exclusively in supermarkets and other retail outlets.