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JuliePolar Bear backs are printed inversely, that is, the light spaces are "left out" not "printed on top of" the blue. So in the case of at least two each of these two cards, the factory forgot to LEAVE space in the blue, not simply put white on top.
My findings: 3 cards: Johnson, hands at chest--normal, but a bit of extra "blue left out space" just above the "T" in "The." Griffith, holding bat: normal. Willits: normal.
(Not trying to show off. My few T206s are almost entirely HOFers; I don't collect the set.)