Maybe this thread will help? You are not the only one with such a razor. http://badgerandblade.com/vb/showthread.php/332456-Super-Adjustable-with-no-date-code Or this thread: http://badgerandblade.com/vb/showthread.php/354015-help-identifying-a-black-beauty-date
You guys are OLD. I graduated in 1982. It was a very good year for graduates and Black Beauties, apparently.