Yes the solid state version of freedom is a peeler also.

A theory commonly heard at Pinball Expo seminars is that if a batch of backglasses were screened on a very humid day, they are more likely to peel.
.................David Marston

Didn't they have some type of climate control in the plant?
It seems that many Bally titles have backglasses that are always found in good condition. I doubt that they were all produced under low humidity conditions. I would think that the condition of the surface of the raw glass would have much more to do with it.

I got really lucky, that my Freedom glass only has a little flaking in the flesh tones and even less in the reds.

No idea why this particular glass has some much issues. Possibly the ink formula.

Now, if only I could find the original non Italian bottom version.

I wish they would have put a 1776 era American flag waving in the wind just behind the guys to give the BG a bit more pop to it.

Mine has held up pretty well with a little flaking mostly on the clothing. The Old Chicago I have next to it doesn't have any flaking at all so it's interesting to hear why some glasses held up better than others. 0F5AE4FC-F6D0-4B18-A788-DA07556E43A7 (resized).jpeg

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I've never seen a flakey "Old Chicago" backglass.

My Wizard is almost perfect.

Mine is toast, but right now $350 isn't in the cards...maybe in a couple months. Wish there a cheaper option like the ones on ebay.

You may want to ask one of them if they'd be interested in making them. Plenty were made and still running today with crappy BG's. Sounds like an opportunity to make quite a few sales if made from vinyl.

Mine ended up pretty good. Only the dark blue in the pants seems to be gone. Unfortunately the scratches on the right side are there. I’ll eventually fix it

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I've previously reached out to the seller suggesting Freedom, but did not get a reply. This was a high production game and most backglasses are poor. I think it would sell more than most other titles.

Yup. "Wizard!", "Flip Flop", "Aladdin's Castle", "Bow and Arrow" and many others ..... you never see a bad one.

But Bally Hang Glider did not hold up very well.
Very apt to fade and craze.

Supersonic has the habit of just peeling off in one sheet

Supersonic is the era of the 4 Color process after Bally abandoned silk-screening. Agreed, they start by "alligatoring" typically at the bottom from moisture or glass cleaner that wicks up at the bottom channel and then just let loose from all the humidity and temperature changes and the 44 bulbs.

Reduced cost, increased profits with the added benefit of planned obsolescence.

After years of collecting mainly Gottlieb and Williams machines I thought a perfect original glass was an extreme rarity. Then I picked up a Bow & Arrow with a near perfect glass. Thought I must have gotten lucky until I also got a Flip Flop, Hi-Deal and Night Rider with near perfect glass as well. Wow Bally figured something out during that era.

I thought someone stated at one time Bally used thicker glass. Theory was that it was less prone to expansion and contraction with temperature swings. Not sure if that is true?

The ink expands and contracts. Not the glass.

Older games used thicker glass as well, but the ink still deteriorated on them. Bally games of that era used plate glass, but so did earlier games by other manufacturers. Gottlieb went to thinner tempered glass somewhere around 1970.
There's really no correlation between glass thickness or temper, and ink adhesion.