Sunburned Groom... A question for the t206 experts here

[bn2cardz]

I recently ran across this Bob Groom T206. Though I already had a few Piedmont 350s and don't have the goal of collecting the set, I had to buy it because the color was off from any other Bob Groom I had seen and this intrigued me.



The scans aren't mine, but are from the seller. I do now have the card in my possession and the colors are really that saturated. My question is what causes the "sunburn" (over saturated) appearance? I have been able to find plenty of info on missing colors. This, though, seems to have an abundance of red, but not lacking anything. There even seems to be some extra red bleed on the back (it doesn't cause a "ghost" or anything else discernible).

Here is the way other the other Groom fronts look:

image from VCP