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<p>[QUOTE="Pyrbob, post: 596939, member: 17044"]I hate to hear about coin shops like that. It sounds like they are there to make money and are not collector oriented. If your 1993 S doesn't have the copper core than maybe it is a 90% silver proof broken out of one of the silver proof sets from that year. But the weight is confusing. You mentioned the thickness of the coin. What are you comparing it to? Keep in mind halves from the 1980's look thicker when you look at the edge of them compared to other years. From what I was told the mint used a higher striking pressure in this period and that causes the metal flowing into the collar that forms the reeding to spread out more creating a wider edge. It can sometimes be misleading to look at the edge to determine the thickness of a coin. Your weight is very low and is interesting. The problem is I would expect the coin to have a weak strike with such a low weight and your coin looks well struck. Coinage dies have their stroke distance set for the planchets being coined in them and a thinner planchet should be a weaker strike. Are you sure of the weight? Could you recalibrate (tare) your scale and weigh it again?[/QUOTE]</p><p><br /></p>
[QUOTE="Pyrbob, post: 596939, member: 17044"]I hate to hear about coin shops like that. It sounds like they are there to make money and are not collector oriented. If your 1993 S doesn't have the copper core than maybe it is a 90% silver proof broken out of one of the silver proof sets from that year. But the weight is confusing. You mentioned the thickness of the coin. What are you comparing it to? Keep in mind halves from the 1980's look thicker when you look at the edge of them compared to other years. From what I was told the mint used a higher striking pressure in this period and that causes the metal flowing into the collar that forms the reeding to spread out more creating a wider edge. It can sometimes be misleading to look at the edge to determine the thickness of a coin. Your weight is very low and is interesting. The problem is I would expect the coin to have a weak strike with such a low weight and your coin looks well struck. Coinage dies have their stroke distance set for the planchets being coined in them and a thinner planchet should be a weaker strike. Are you sure of the weight? Could you recalibrate (tare) your scale and weigh it again?[/QUOTE]
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