Sorry Joe, thanks for your patience. Your OP sorta got lost in the shuffle. But you've been around long enough to know these things happen occasionally- marble collectors, you gotta love 'em. 🙂
Anywho, I am leaning slightly toward Akro on your marble, mainly because of the pumpkin colored patch. It would be nice to see what the interior looks like, though. Can you get any light through it?