The American Silver Eagle coin is one troy ounce of .999 pure silver. So how much is a troy ounce you ask? A troy ounce is 31.10 grams. For those that want the technical weight, and have a scale that measures in at least seven decimal points, the exact weight of one troy ounce is 31.1034768 grams. However, if you have a genuine American Silver Eagle coin, for all intents and purposes, it will weigh 31.10 grams.
Weighing your American Silver Eagle coins is one way to know that you have an authentic coin, and that it’s not counterfeit. Since coins have been made, counterfeiters have been attempting to copy them. Given the price of silver, counterfeit coins are on the rise. You always want to make sure you buy from a reputable website or business and be leery of anyone that offers to sell you American Silver Eagle coins at discount prices. Chances are they could be fake.
You can buy an inexpensive 100 gram scale (I purchased mine from Amazon for less than $15 dollars) that will give you piece of mind when buying coins. If you want complete accuracy like 31.1034768 grams, you’ll need to obviously buy a more expensive scale, which can run upwards to several hundred dollars depending on how accurate it is. Overall, I’m happy with my 100 gram scale.
The first thing you’ll want to do is make sure that your scale is calibrated correctly. If your scale doesn’t come with a 100 gram weight, you’ll want to purchase one. Small electronic scales have a function that will measure the 100 gram weight to make sure the scale is correctly calibrated.
Once you begin to weigh your American Silver Eagle coins, you may notice that there’s some variance between coins and that’s perfectly normal. Just in one tube of 20 coins, weights can be .01-.25 grams difference. If you’re off by several grams, for example, if your Silver Eagles weight 32 or 33, or much less like 30 grams, there are other tests you can do that can determine if it’s counterfeit or not, such as ring tests or magnification tests. However, if your Silver Eagles are off by several grams, it’s best to have them checked out by a professional for their authenticity.