To determine whether a Pokemon card is genuine or fake, you can check its size, spelling, number, and symbol. The size of a regular-sized card should measure exactly 2.48 inches (6.3 cm) x 3.56 inches (8.8 cm), while a genuine Jumbo Pokemon card can be as long as 9 inches (22.86 cm). Most fake cards are made in China and display poor English. Every Pokemon card has a clearly visible number, and every Pokeman card's number is unique.