I see what you mean about the font size. I agree that is most likely something to do with sqaudron leader, or he was just "special".
I see the center plane in the one shot has what appears to be a black wing, any way to know if that was him? Or are we assuming since he's in front that he is the leader? Not trying to be smart here, just curious actually.
I have "the Last" Spit in my stash. I wonder if any of the those late birds had the black wing?
BK