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<p>[QUOTE="Pete Apple, post: 26139048, member: 103982"]Agree. It is confusing! I have received several communications from the Mint RE: tolerances, and their format is inconsistent! I interpret this to mean that thickness tolerance covers the range of 3µ to 17µ. What they left out of their information is what the tolerance is for each planchet type (if any!).</p><p><br /></p><p>I do think their planchet specifications call for a plating thickness of 8µ for BUSINESS STRIKE and 16µ for PROOF STRIKE. Since Mint Tolerance for cent thickness is about ±33%, it may be that is roughly their tolerance for these values, also. Without the documentation they are withholding (general contract substance and summary is available online, but no additional details), this is the best guess I can make! Their mention of 3µ is a mystery, but may just be an outside limit.[/QUOTE]</p><p><br /></p>
[QUOTE="Pete Apple, post: 26139048, member: 103982"]Agree. It is confusing! I have received several communications from the Mint RE: tolerances, and their format is inconsistent! I interpret this to mean that thickness tolerance covers the range of 3µ to 17µ. What they left out of their information is what the tolerance is for each planchet type (if any!). I do think their planchet specifications call for a plating thickness of 8µ for BUSINESS STRIKE and 16µ for PROOF STRIKE. Since Mint Tolerance for cent thickness is about ±33%, it may be that is roughly their tolerance for these values, also. Without the documentation they are withholding (general contract substance and summary is available online, but no additional details), this is the best guess I can make! Their mention of 3µ is a mystery, but may just be an outside limit.[/QUOTE]
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