Maybe I missed this in a previous thread. But if an original regular Old Mill T206 card was placed directly in the hot sun, back side up for a long period does the black ink turn blue from the UV? I know black ballpoint kinda fades to a dark purple after a while. How about setting it under some sort of artificial light for a very long period of time? Just some crazy thoughts...considering sunlight will fade the paint right off an automobile.
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