None of the coins currently used in the US are magnetic. Our five cent coin is called a nickel, named for the nickel metal it is made of. Nickel is a magnetic metal, but our coins are 25% nickel and 75% copper, so they are not attracted to a magnet. On the other hand, our paper currency is attracted to strong magnets. It is printed with a green, magnetic ink to make it harder to counterfeit. Hold one end of a US bill, letting the free end hang down. Bring a strong magnet near the lower part of the bill, and you should see it stick to the magnet.