Mark IV Speaker ID Help Please

[iggs]

Hey all ... there is a Widebody Mark IV combo Rev B for sale locally but the speaker in it has no label. I called Mesa and they said any speaker they loaded in the combo would have a label and be either EV or C90.
They also said the label would not just peel off either.

Anyone know what this speaker might be?

Thanks!

 

[Markedman]

That's a MS-12 or black shadow Eminence speaker.

 

[iggs]

That's a MS-12 or black shadow Eminence speaker.

Thanks, I'm guessing that was not factory installed?

 

[BlackBoxy]

That's a MS-12 or black shadow Eminence speaker.

Thanks, I'm guessing that was not factory installed?

its neither a Ms12 or eminence or EvL!

its a Stock Mesa Celestion 90 ! the holy grail of mesa Mark IV, the dear son of legendary Rola G12H- 80