NTP Poker cards are popular used in Italy. Some customers like to use the NTP marked decks with small marks at four corners. Though these marks are not as big as those big marks, we can mark then very clear at the white side. And we can clearly know which card it is by seeing the small number and suit at the corner even the players cover most of the cards.
Usually, the sign of the suit is exactly the same as the suit in the poker face.
As that shows in the picture, it's Club Q in the left card and Diamond K in the right card.