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<p>[QUOTE=&quot;clorox, post: 1473898, member: 36209&quot;]I just weighed some of my silver coins on my horrible, inaccurate, and old kitchen scale.</p><p><br /></p><p>20 Franklin halves split pretty evenly between very little to no wear to a decent amount of wear were weighed at 8.5 avoirdupois ounces. That converts to 241 grams. Coinflation would say 20 Franklin halves should weigh 250 grams or 8.8 avoirdupois ounces, for a -3.6% error.</p><p><br /></p><p>40 silver Washington quarters -- about 30 are in good shape with little wear, the other 10 are quite worn -- weighed in at 8.75 avoirdupois ounces. That converts to 248 grams. Coinflation says they should weigh 250 grams or 8.8 avoirdupois ounces, for a -0.8% error.</p><p><br /></p><p>30 well worn but not awful silver Roosevelt dimes and 5 well worn but not awful Mercury dimes weighed in at 3 avoirdupois ounces. That converts to 85 grams. Coinflation says they should weigh 87.5 grams or 3.1 avoirdupois ounces, for a -2.8% error.</p><p><br /></p><p>All told, they weighed 20.25 avoirdupois ounces, or 1.26 pounds, or 574 grams. Coinflation says they should weigh 587.5 grams or 20.72 avoirdupois ounces, for a -2.3% error.</p><p><br /></p><p>So imrich is spot on with the 3% error figure for Coinflation&#039;s numbers. None of my coins, however, are badly worn or slicks, so I wouldn&#039;t be surprised if those are up to 5% off.[/QUOTE]</p><p><br /></p>

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