I don't see that either card has been sold, presuming it is 2 cards, but of course the similarities in the auction listings are curious
Clouseau: Facts, Hercule, facts, behind them lays the whole fabric of deductive truth. Now, Hercule let us examine these facts: One, she was found with the murder weapon in her hand, two the murder weapon was fresh with blood, three there were no fingerprints on the murder weapon other then hers and four [holding up all 5 fingers] all the members of the Ballon household staff have perfect alibis. Now then, Hercule what do these facts add up to?
Hercule LaJoy: Maria Gambrelli killed Georges the gardener.
Clouseau: You are an idiot, only a fresh faced novice would come up with a conclusion like that.
Hercule LaJoy: But the facts.
Clouseau: Listen, who even killed Miguel, killed Georges the gardener and he did it to cover up the first crime. Now what he is trying to do is lay the blame at the foot of this, this poor servant girl.
Hercule LaJoy: Well who do you suspect?
Clouseau: I suspect everyone.
Hercule LaJoy: Well I suppose that is possible.
Clouseau: Possible? What do you mean possible? I deal in certainties.
*****
Meaning that I wouldn't go looking for the non-obvious explanation.