Carl Zeiss Jena 12cm f6.3 Tessar S process lens: coverage 6X7?

[Hyatt1025]

I have an old enlarging lens that I am trying to determine what it will cover with respect to negatives. The lens is a Carl Zeiss Jena 12cm f6.3 Tessar-S. I know it is a process lens for colour separations and I think it has 32.5mm mount, however, I am wondering if it would be adequate for 6x7 or even 6x9 negatives. I know 4x5 is likely a no go. I thought I would see if any of you had some experience with these lenses and to seek your advice.