Question re E121 Series of 120

[ValKehl]

Am I correct in thinking that the E121-120 American Caramel cards were printed on both beige and white stock? This appears to me to be the case based on my two Sam Rice cards shown below:

[Casey2296]

I'll check the back scans on my E121's when I get home and see if there's is a color discrepancy. It's odd that the fronts are both white but the one has a beige back. Almost has a Collins-McCarthy tone to it.

[FrankWakefield]

I think maybe some early collector put that card on the left in a folder or book or scrapbook that had pages with a low ph, and that affected the back of the card, causing the brownness. Similar to how many books printed in the 30's with lesser quality paper that continue to deteriorate due to the acidic content.

Or maybe its backside got slightly scorched once upon a time.

The E121's I've seen/had/have don't appear to suggest different cardstock.

[rhettyeakley]

Frank pretty much hit the nail on the head. They have some toning which happens more often with the E121 Series of 120 than the E121 Series of 80.

Keep in mind the E121 Series of 120 was printed on different card stock than the Series of 80. The biggest difference is the thickness of the card stock itself.

The Series of 120 are printed on thinner stock than the Series of 80. This is very obvious if one holds a card from each series in different hands and given a slight bend to see the difference in thickness but is tougher to feel if done individually.

The backs of the 120 cards also have a matte finish while the Type 1, 3, and 4 of the Series of 80 are on a somewhat glossy back stock. Interestingly the Type 2 (or 1st line ends with "eighty" back) of the Series of 80 cards also have a somewhat matte finish to the backs as well.

[GeoPoto]

I have four E121 Series of 120 -- this one has the "toning", the other three do not.

https://www.net54baseball.com/attachment.php?attachmentid=431082&stc=1&d=1607948830
https://www.net54baseball.com/attachment.php?attachmentid=431083&stc=1&d=1607948841