Angulon 90mm 6.8 vs Nikon 90mm f8

[l2oBiN]

I have used back movements on both. Both are in a offcentre board. I still don't know which is which. I guess I will haveto load them onto the camera and see which one corresponds to an increase/decrease in focal length...

[Ole Tjugen]

I also think #2 is the Angulon.

Central sharpness should be identical, any slight difference might well be in favour of teh Angulon! But the little old Angulon does have softer corners than newer WA lenses, although how much softer varies with the vintage. At a guess your Angulon was made sometime in the 1960's? Early versions have a softer transition from sharp center to soft corners, and in some cases can give larger coverage at very small apertures; the later ones have more sharply defined coverage like we see here.