My only hesitation would be that it's some kind of a newer MK that I am not familiar with. That long seam I see in your new pics makes me wonder a bit.
Imagine a white patch where the open area is in your last pic and the blue pushed up into ribbons, and you've got an MK patch and ribbon.
In fact, I am now thinking it's not Vitro at all - sorry.
JABO, Akro and Peltier all made some, as far as I know. And I am pretty sure they have been made in Asia too. It sort of depends on how you define "logo marble".