I've seen that printing anomaly on several 1949 LEAF BB cards. Not often with the Ruth card,
but it's there and it's an original authentic LEAF card.
Note this same effect on my Johnny Hopp card. Also, it is a color printing error like the Ruth
you are questioning. Both cards are not the usual RED, but a "violet" color.
I hope I have allayed your concern regarding the Ruth card on ebay.
TED Z