Thanks for this.
I never met Bill Tow but he is associated with some great CAC ID and many very nice CAC marbles as well.
What you must do is get a handle on your images.
Crop them tight and give us some nice clear images. Natural sunlight is the very best.
I would just venture a guess at what you posted here. āIt does look like a CAC like you described but few here have seen one like this, they are very rare.
MarbleāOn!!