Consew Seiko Singer ??? Machine Identity ???

[Kenzo]

Greetings to the skilled-leather community. My name is Kenzo, a motivated novice for automotive upholstery. You may have found me searching your forum as I find the website full of great topics and a wealth of information. I am reaching out on this forum to identify a machine. 
My current industrial sewing machine has no nameplate; model number badge or the like. I’d like to get at least a rough idea of the model number as it looks to be missing parts

[Kenzo]

I will post a stream of pics. Is there anybody out there that can help me identify this machine. Without the model number I am lost: thanks in advance.

[Kenzo]

Here are some photos of the internal hardware:

seems to me like this machine had more shafts  than it does currently.

[Kenzo]

There is a “KU” marked underneath in the casting.  

[Kenzo]

Any correspondence would be appreciated. 

[Constabulary]

Consew 225 or seiko stw-8... or so I guess. No Singer or Juki I think.

Look t at the tension unit and the hook if you can see any makers stamps

 

[Kenzo]

Constabulary: thanks a ton for the correspondence! 

[Kenzo]

15 minutes ago, Constabulary said:

Consew 225 or seiko stw-8... or so I guess. No Singer or Juki I think.

Look t at the tension unit and the hook if you can see any makers stamps

 

I am assuming the C 1967 plaque is irrelevant?