From http://www.pcgs.com/books/silver-dollars/Chapter19-001.aspx "There was an alternate reverse design prepared, in which a more formal eagle was used. It was reminiscent of something that might have been found on a pattern of the 1870s and shows that the Apollo reverse was not exactly the motivating feature of the coinage. One of the two reverses (it is uncertain which) was objected to by the professional worriers at the State Department who thought that the eagle's expression might accidentally offend somebody somewhere. The expression just had to appear friendly if we were to be liked around the world, an attitude which explains why the opposite is sometimes true." Does anybody have any more information? A pic?
Man Ikes keep sneeseeking up on me. I don't have what you're looking for, but this post just added to the enticement factor for these coins. Thanks for sharing.