Answer:
There are a few ways to tell if it is silver. The first thing to do is measure and weigh the coin, a coin with the wrong diameter, thickness or a coin that weighs too much or too little than a genuine silver example is most likely fake. The second thing to do is match up the designs with that of a genuine coin, if the coin has noticeably differences like a date that shouldn't exist (like a coin looking like a Silver Eagle with a date of 1799) is a dead giveaway the coin is a fake.