6r. could be hiding in a 7 slab, but I'm not sure it would grade that again because of the light spotting.
This and http://www.cointalk.com/t201914/ will be ending tonight. I am not sure just when I will get to the answers and standings.
This might have been a 66 once upon a time, but there are just too many spots on it now. Scores will follow eventually.