Ok, I did a bit of comparing, and the hat area is unusal, but not as odd as I'd thought. The image being tilted made it look worse. Straightening it out helped.
Using Craigs scan and copying out the hats.
There's one of the small differences. The red hat and the card on the left are similar, the middle one is different. The dark area on the hat is one of the things I mentioned earlier, that looks like a scuff that's been colored over.
(Try it with a modern card that's on white cardboard, like an allen and Ginter. Scuff it with a bit of sandpaper then color over the scuff with a red marker. There should be a dark spot)
The card is still a puzzle to me. I think the other red lines are probably factory, but the hat has been colored with marker.
I'm glad you bought the other one showing some red. It was overpriced for the condition, but as a pair with the red hat card it might be better.
What would also be interesting would be finding out if the hat outline is related to the series. Gap on 350, no gap on 150?
Steve B