Are All Schneider 90mm Angulons the same ?

I have been looking at a 90mm for my 4x5 crown graphic..
I see some of these were the 'normal' for the smaller
2 1/4 - 3 1/4 camera.  Are they all really the same
and will they cover 4x5. Apparently early ones
were not coated or single coated. Any info on
how to tell them apart would be appreciated.