1955 Topps Coloring--Killebrew

Originally Posted by bnorth

My experiments happened with cards from the 50s to the 90s.

I have heard the red to orange fading on T206s. I also heard many of the orange Cobbs got faded on purpose.

The red fading to orange on Cobbs is a perfect example of the yellow not fading first. Less red, more yellow equals orange.

[G1911]

I'm saying that my shorter-term tests of sun-induced fading have produced red fading to orange, not magentas fading. So I'm not even really disagreeing with you, just reporting what I've found as the two colors had been brought up and I'd done some tests on t cards. If that's offensive enough a reason to lurk, okay.

[bnorth]

Originally Posted by G1911

I'm saying that my shorter-term tests of sun-induced fading have produced red fading to orange, not magentas fading. So I'm not even really disagreeing with you, just reporting what I've found as the two colors had been brought up and I'd done some tests on t cards. If that's offensive enough a reason to lurk, okay.

The fading is different in the old T206 cards because of how they are printed.

In cards printed during the time frame this section of the forum are printed differently. In them the red turns to magenta because the red is made by printing magenta and yellow together. So the red fades to magenta at exactly the same rate as yellow fades.

For anyone interested here is a series of pics showing the fading of yellow ink on a baseball card. Ignore the Logo, I left original during the process.