During the poker game, in the wide shot, we see curly Smith’s cads fanned out. That omnipresent 10 of Hearts is the card on the far right. Then they switch to a close up of his cards. He fans them out—again—and the 10 of Hearts is on the far left!
Also, in the poker game, Curly asks for one card. He adds it to his hand in the close up. Then he adds one card to his hand in the wide shot as well. (Of course that 10 of Hearts still moves over from one end of his hand to the other again.) Also, he doesn’t put the new card in the same place both times either. In each photo, the blue arrow is pointing to the new card, the 7 of Hearts. Thanks Ann Marie!