I was reading the Official Collectors Edition ESB magazine from 1980 and saw this picture. I hadn't noticed this before and while this may be old news but I figured I'd share
Yep, that one was dug up a while ago and I think is on the reference CD http://www.thedentedhelmet.com/showthread.php?t=3123
Still one my favourite photos out there, I love behind-the-scenes photos with pieces in progress