3D
I have never collected the Kellogg cards but do have a set of the Topps 1968 3D cards. They don't have a bending problem but can crack. I don't have the courage to try Adam's low level oven heat but maybe I can convince Bob (bobsbbcards) to try that on some of his :-)....or maybe soaking them :-0.
I have always liked the Kellogg cards. Do all of them bend over time, or just some ?
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