Help to ID Modulation Iron

[KzeroCOM]

Please take a look at the picture to see if it looks familiar. 
Looking for help to ID the manufacturer or find the connection chart.
Appears to be multi impedance type.
I'm using 813's in AB1 to modulate a 4-400 in class C.  2000v on 813's, 3000v on 4-400. 
Thanks for taking a look! 

[Opcom]

For some reason, looks a bit 'Thermador-ish' to me. No nameplate will be a challenge.

[w0ms]

I have recently discovered the mod iron I have is made by Thermador from California back around 1950. 
My next question is does anyone have a Thermador catalog from the late 40's early 50's? 

Thanks

[W1ITT]

I see that Thermador.com is a site that offers transformers for appliances.  It might be fun to contact them and see if they have any old catalogs or material down in their dungeon that refers to older times and modulation transformers.
There's often someone who keeps a secret stash when the "efficiency" freaks come around and order anything that hasn't been used in the past month to be destroyed.  I did it a few times and wasn't sorry...
73 de Norm W1ITT