X-Oteric Forces - Basil Smith Children's Show The traditional Court cards are

The traditional Court cards are modified with varying colors throughout the entire deck

Precision machined from brass in the USA by FUN Incorporated

and these are a case study example

It has often been imitated but never duplicated

X-Oteric Forces - Basil Smith Children's Show The traditional Court cards areEFFECT: The magician writes down a prediction and places it aside, sight unseen. A deck of cards is introduced, shuffled and handed to a spectator along with a pen. The spectator holds the cards behind her back and marks any card with a large X. The magician's prediction is shown and it proves to be a perfect match to the spectator's selected card! Absolutely No Sleight of Hand Required with No Switches or Forces Immediately Resets Diabolical