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<p>[QUOTE="-jeffB, post: 3378995, member: 27832"]+/- 1.5 grain, <a href="https://books.google.com/books?id=tmwwAAAAYAAJ&pg=PA114&lpg=PA114&dq=us+silver+dollar+weight+tolerance+1.5+grains&source=bl&ots=GJ-LaFbhzn&sig=ACfU3U0xdKfzn9lQxezG9JdOcg4oS4IeDg&hl=en&sa=X&ved=2ahUKEwjB0Jih8tTgAhUIsJ4KHQeUB1oQ6AEwDHoECAYQAQ#v=onepage&q=us%20silver%20dollar%20weight%20tolerance%201.5%20grains&f=false" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://books.google.com/books?id=tmwwAAAAYAAJ&pg=PA114&lpg=PA114&dq=us+silver+dollar+weight+tolerance+1.5+grains&source=bl&ots=GJ-LaFbhzn&sig=ACfU3U0xdKfzn9lQxezG9JdOcg4oS4IeDg&hl=en&sa=X&ved=2ahUKEwjB0Jih8tTgAhUIsJ4KHQeUB1oQ6AEwDHoECAYQAQ#v=onepage&q=us%20silver%20dollar%20weight%20tolerance%201.5%20grains&f=false" rel="nofollow">according to the Director of the Mint</a>. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" /> Thus, 0.097g.</p><p><br /></p><p>Whatever the tolerance was for piastres, it seems unlikely that it would have extended to +/- .3g, or even +/- .173g -- a 27g planchet would have to be .173g underweight to fall into the maximum tolerance for a US silver dollar. That would be a 0.64% shortfall.</p><p><br /></p><p>On the other hand, the US tolerances for halves, quarters, and dimes are <i>all</i> listed as 1.5 grain in that table -- which gives weight tolerances of .78%, 1.56%, and 3.89%, respectively! I hadn't really realized that the tolerances were constant by <i>weight</i> across all those coin denominations.</p><p><br /></p><p>Regardless, if you can demonstrate a population of 1921-S or 1922-S dollars weighing significantly above 26.827g, it should support your hypothesis pretty strongly.[/QUOTE]</p><p><br /></p>
[QUOTE="-jeffB, post: 3378995, member: 27832"]+/- 1.5 grain, [URL='https://books.google.com/books?id=tmwwAAAAYAAJ&pg=PA114&lpg=PA114&dq=us+silver+dollar+weight+tolerance+1.5+grains&source=bl&ots=GJ-LaFbhzn&sig=ACfU3U0xdKfzn9lQxezG9JdOcg4oS4IeDg&hl=en&sa=X&ved=2ahUKEwjB0Jih8tTgAhUIsJ4KHQeUB1oQ6AEwDHoECAYQAQ#v=onepage&q=us%20silver%20dollar%20weight%20tolerance%201.5%20grains&f=false']according to the Director of the Mint[/URL]. ;) Thus, 0.097g. Whatever the tolerance was for piastres, it seems unlikely that it would have extended to +/- .3g, or even +/- .173g -- a 27g planchet would have to be .173g underweight to fall into the maximum tolerance for a US silver dollar. That would be a 0.64% shortfall. On the other hand, the US tolerances for halves, quarters, and dimes are [I]all[/I] listed as 1.5 grain in that table -- which gives weight tolerances of .78%, 1.56%, and 3.89%, respectively! I hadn't really realized that the tolerances were constant by [I]weight[/I] across all those coin denominations. Regardless, if you can demonstrate a population of 1921-S or 1922-S dollars weighing significantly above 26.827g, it should support your hypothesis pretty strongly.[/QUOTE]
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