The sad fact is that the 2012 catalog says that the PAM 320 is supposed to have AR coating on the crystal. After a very careful examination, I would say that my PAM 320 does not appear to have any. If there is, it's not very effective. It won't be the first time that a catalog does not correspond to reality.
And yes, my PAM is, "Ori punya".
To some collectors, an AR coating is actually a minus since the AR tint will affect the color/look of the dial and AR coating is easily scratched. I haven't noticed that problem with my Omegas.