Kind of looks like one of mine, right down to the markings, the lack of any decals (they were NEVER on the bow - my grandfather bought it new in '68-69), and the finish that's crazing like, uh, crazy
Mine had no coin though.
The consensus was it was a Shakespeare, but I've been told by more than a few the markings are consistent with American Archery. Maybe Wade can clear some of this up, b/c the site window measurements weren't the same as for the Wonderbow...