[Footballdude]

I've had these 2 cards since the early 70s. As a kid I always thought thy were magical, like I was seeing through the card, to the printing on the back. I eventually realized they were most probably "kiss prints". These probably occurred by placing one printed sheet on top of another, when the ink was not totally dry, so the image of the back printing of the top sheet got transferred to the top of sheet under it.