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<p>[QUOTE=&quot;superc, post: 1704714, member: 44079&quot;]This is about the US Silver Eagle Dollar, which is also a silver bullion coin.&nbsp; Supposedly all of them contain the same content of .999% silver and weigh one Troy ounce.&nbsp;&nbsp; To me, this would mean they would all weigh the same.&nbsp; I got bored the other day, so I started weighing some.&nbsp; Imagine my shock when I started weighing some and found variation.</p><p><br /></p><p>I used a grain scale (an RCBS 505).&nbsp; One Troy ounce is 480 grains.&nbsp; What I expected to find when weighing 10 different uncirculated Silver Eagles from various years was none under 480 grains, and a weight variation of about 1% (4.8 gr.) or less&nbsp; What I found was none were under 480 grains (I will give the US Mint that), but weights running as high as 497 grains down to as low as 483 gr. were encountered&nbsp; When my first weighing hit 488 gr.&nbsp; I thought I had a scale calibration issue and much searching for exact known weights followed before continuing the weighing.&nbsp; My conclusion a few days later was the scale was spot on and the weighing of the other coins then continued.&nbsp; This means a weight variation of at least 3%+ is acceptable to the Mint even though they are stamping them all as one ounce.&nbsp; All of the coins I measured had the same width and thickness to within .002 inch.&nbsp; This means the variation is in the silver content.&nbsp; My issue is simply that if there is a 3%+ weight variation (perhaps more with a larger random sampling?), then they can&#039;t all be 999% pure silver.&nbsp; </p><p><br /></p><p>I have no doubt they really are silver of greater than Sterling (i.e., 95%), but I suspect some may be closer to 97% than .999% or else they would all weigh the same.&nbsp; Just saying.[/QUOTE]</p><p><br /></p>

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