DC Comics published a special deluxe format edition for the 50th issue of The Legend of the Dark Knight, one of their approximate 179 Batman titles of the time. About half the issue (if memory serves me right) was devoted to pin-ups of the character by various artists. The only thing really memorable about the assignment was the fact that the editor- the much beloved Archie Goodwin- gave me a call immediately on receiving it, and showered me with praise. That sort of thing can really make a freelancer's day.
Sandy's inked and rough/color guide are included here: