There are many kinds of playing cards of Copag cards series, and Copag 1546 poker cards are one of the excellent one.
The merits of Copag 1546 are that they are jumbo index sized and are made of 100 % plastic material. These characteristics are turning them into the cards you can use for years. The back designs of Copag 1546 marked cards are in different colors. Actually the back color determines the marks. Usually there are UV or IR markings will be marked on their back.
For the light colored cards are marked with big font or number in the middle, or with small fonts in four corners. We also can mark different colors on their backsides. You can find the red cards with black or white marks. The dark colored cards are usually marked just with a big font in the middle. And the invisible ink marked on their backsides are white.
It is known that the performance of the light colored marked cards is usually better than that of the dark colored marked cards.