As one kind of playing cards of Piatnik brand, Piatnik OPTI poker cards is made in Austria. The bridge size deck of 88mm*58mm has 4 PIP large index. The backside graphics are regular little squares, colors of blue and red are available.
Piatnik OPTI bridge size 4 index marked cards are the cards marked with invisible ink on the back, and those luminous marks can be seen only when wearing our infrared contact lenses or marked cards sunglasses. Thus, it's better to buy our infrared contact lenses when you buy our marked cards, for invisible marks we made on Piatnik OPTI bridge size 4 index cards can’t be seen by naked eyes or other normal contact lenses.
There are marked cards made by our company of different kinds and Piatnik poker is one of the best brand in Austria.