Dagmar was insanely sexy. For people of my generation she had a body that reminded us of the hot East German track athletes (and yes, there were lots of those, usual jokes aside). A wonderful tight body, and those tremendously buggerable cheeks. This scene is one of her best.
http://www.egafd.com/actresses/details.php/id/e00187
http://www.vintage-erotica-forum.com/showthread.php?t=58980&highlight=Ellen+Haufler