Well, is it any help at all if I tell you that in the proper light, it has a single, barely noticable row of black dots (just slightly darker than the background) directly above the lateral stripe between the red/white markings? Like
this one, only my snake is darker.
Don't know why it would, though. Just grasping at straws here.
I'd be willing to bet that it's an "artificial intergrade" and definitely CB.