Is 1967 Topps yellow back a thing?
Hi there,
I've been lurking a while and saw something that might be of discussion here. Saw this 1967 Topps Wilhelm card and the back was discolored. Does anyone know if this is fading or weird ink circumstances? I've seen others like this from different series (no apparent pattern), and one card who's back was brownish. I don't know what to make of it.
Joel
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