This is an oddity I found in a drawer with some other stuff -- it's yet another preliminary sketch for my cover for issue #4 of the original Volume 1 TMNT comics. I have already posted one of these preliminary drawings (Friday, February 13, 2009: Blast from the Past #150).
This one is kind of strange in that I drew it on illustration board instead of the Bristol board I typically used. I'm not sure why. -- PL