MM112 65 new to me...musicman speaker?

Hello all,
I recently traded into a MM112 65, model 2275-65, serial BN 02094...which after cruising this site for a while reveals nothing to the date.
The speaker itself has a silver sticker on the back and the music man logo on it, no EV logo, and the cone stamp #451222.
It has the silver backed MM logo and the 12ax7 which leads me to belive its an early model (?)
It even has the footswitch for the tremolo/reverb and works great.
It has GE tubes, which I imagine are a replacement as they look very new.
I am trying to date it without opening it up too much, but I read on here that is the best way to know for sure. A
Has anyone seen these MM speakers with numbers such as this?
Thanks a ton!