Speaker ID Help

[rupe]

It looks like I'll be adding a gig as a house band so I decided to put togther a rig that I could leave at the venue. I broke out my old Marshall 4x12 that I used back in the 80's to clean it up and prep it for use. I never really cared about anything other than plugging in and playing back in the day so I never even payed attention to what speakers were in it.
Anything anybody can tell me about the cab and speakers would be appreciated (I traded for it in '85 from another local player)...I have no clue what these are.

 

[Scumback Speakers]

They're some kind of Eminence. Email them your 67-xxxxxx number from the frame, and they should be able to tell you what it is.

It is NOT a Celestion, though.

 

[rupe]

Thanks!

I thought the frames looked like Eminence but I found the lack of any significant markings odd. I'll reach out to Eminence and report back what I find out.

 

[rupe]

UPDATE: Eminence says it was a custom design manufactured for Marshall to their specifications, but they have no further details These ones were manufactured the 5th week of '83. I didn't know Marshall used Eminence in their cabs...anybody else know anything about these???