Well... I just tried to post a picture of each set of casting letters with no success.  One of those things I haven't mastered yet...  

NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York

This is probably an easy question, but..., Anyway over the years I've heard of both large and small "G" heads. Having only seen one set of these heads in person the question is, is it a difference in the size of the cast in letter and how do you tell them apart? Thanks for educating me on this point.

I did try a search first, but the search function doesn't seem to like me. Thank you all again. -Dave.