Here are several and I'm still not sure. I think there are some similarities. I wonder could it have been from a side other than the front or an artists rendition prior to building it.

http://www.thechipboard.com/cgi-bin/tcbarc11/tcbarc11.pl?read=343367

http://www.footfamily.com/summer8.jpg

http://content.onlineagency.com/sites/9979/images/00580259.jpg