Kinda looks like a Smith swirl in the location where Dennis put his marks. Did Dennis letter it and if so he might be able to tell you if that was Lenny - given he's around here sometimes.
Sorry this is a tangent but... Doesn't it seem odd that the number is so far back on the door on the King car? Almost looks like you could have put a 1 after the 7 and made it fit given how far back it is squeezed to the rear wheel. Kind of begs the question as to why the choice of placement.