Who makes this?

[Jfnphotography]

Have a lens board adaptor not sure what kind it is. Here is the logo on it, any ideas?
It's not Toyo
The outside size is 6x6 inside 4.5 x 4.5

Thanks Jacob

[Paul Fitzgerald]

That looks like a reducer for a Calumet C-1 8x10 camera.

[Jfnphotography]

I was thinking Calumet to.