Looks to me like those red marks are caused by the cards being placed directly under a SC overprint with that big red bar, and then left together for a long time.
Everyone wants every stray mark to be 'wet sheet transfer', and I've yet to discern the magic of it. I don't think either of the cards are wet sheet transfers. An SC card with an overprint bar got damp while pressed down on those cards, long after they left the printer's.
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