Ive certainly not seen any abuse here.
Looks like a fantastic stick, if it picked up well and plays like it should, I personally wouldn't care about a CM missing from the spine, but if that's not what you paid for then it would make sense to touch base with B3 first to see what has gone on and perhaps update us. It also looks like it has been used? I would have avoided that if you were genuinely unsatisfied with the product you received. Like a few have mentioned, looking at the edge profile, the spine certainly looks to be more than 60mm if those edges are 40mm, however it could be the angle of the photo.
Good luck, looks a brilliant bat never the less.