This is the original 4 ohm Mesa speaker from my later black-on-silver Walkabout combo. My understanding is that these are just custom Eminence Deltalite 2512 speakers. It is in great condition and was rarely pushed in its lifetime- the only issue is that some of the cardboard mounting ring on the rear stuck to the cab and pulled up a bit during removal, but I glued it back down and it is as good as new. I switched over to an 8 ohm speaker awhile back as I plan to eventually make a lil Scout stack when I can track another 8 ohm Scout or 2 down locally.
Looking for $80 shipped in an Eminence box or trade for a TC Polytune tuner, an fDeck v3 HPF, or a delay with tap tempo.