Sorry it wasn't Miguel, The Tiny Toad (zorkar@yahoo.com) suggested the rotation.
See this thread:
http://forums.bungie.org/fanfest/fanfest.pl?read=716
: It could be that the 'tail' is a directional indicator, pointing us to the
: correct outside number, if indeed it works that way. Miguel mentioned he
: was going to try and rotate the symbol due to come calculation (he
: describes it on the Fanfest board ...somewhere!) to see if it could be
: recognized that way.
: If it can't, it makes me wonder if it's two digits much like the C & 1 on
: the first dial or the myan 74 on the seventh.