In reality, he simply observed more than 10,000 spins of each roulette wheel to determine flaws in the wheels. Note that patterns do not factor in Jokers as they are a very recent addition which leads to every manufacturer making their own trademarked depiction of this card. Sixteenth century French-suited playing cards A set based on the cards of Pierre Marechal of Rouen, France, dating to 1567 British Navy Fleet Air Arm search and rescue units (helicopters, etc.) sport an ace of clubs symbol. ...