All three images were printed at the same time. The center image is the control sample, printed on the second generation Premium Glossy. The print on the right is the second generation after 3 weeks in the ozone chamber. The print on the left is printed on the original PGPP, after the same 3 weeks in the ozone chamber.
The difference is obvious, but the 2nd generation PGPP is from the defective batch. There's certainly no way to know if the 3rd generation paper will perform as well.
The images were scanned in one pass. The scanner is a Microtek E6. All automatic adjustment settings
were disabled. Note that my scanner doesn't seem to handle orange/brown colors very well. The effect is
actually much more noticeable to the naked eye than it is on the scanned image.