Hear are the ones I own with no definitive artistic credit-
They are all very nice, but I can't be certain they were all done by the same artist.
That is cool! I guess what having this mystery artist or artists did was bring a greater variety to the look of Bally and Williams pinball machines at the time instead of just having one guy do them all. If it was left to one artist and one only, he might have been spreading himself a little thin and all machines would have looked too similar.
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