There are so many types of cards, but the Copag cards are probably the finest.
The penguin card design is one of Brazil's favorites.
The back designs of the Copag marked cards are in 2 colors - red and blue. Actually the back color determines the marks. The marks can be UV and IR.
The red colored cards are marked with big letter or number in the middle, or with small fonts in the corners. The marks are also in different colors. You can find the red cards with black or white marks.
The blue colored cards are usually marked just with a big font in the middle. And the ink used for the marking is white.
It is known that the performance of the red colored marked cards is usually better than that of the blue colored marked cards.