Magnetic coins are old news or poor fakes.....That's the 1970's way of detecting fake silver coins...Not any more. None of these fakes I posted above are magnetic.If a magnet picks it up, it's fake.
Best at home test is weight. Should weigh 26.73 grams, slightly less if well worn.
.999 silver is diamagnetic, so it will react to a magnet in an opposite fashion. If you slide a real .999 coin down a magnet, it will have a tiny grip to the coin.