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<p>[QUOTE=&quot;John Burgess, post: 7606156, member: 105098&quot;]Philadelphia doesn&#039;t carry a mintmark for many reasons, this being one of them, when one of the other mints like W or S has down time and helps out with circulation strikes, there&#039;s no way to tell one from the other. so here&#039;s no instant rarities or a random low mintage item. </p><p><br /></p><p>Philly also has the engraving and design departments and master hub and master die making capability the other branch mints don&#039;t have.</p><p><br /></p><p>In circulation strikes, if Denver, or Sanfran (if they were striking for circulation like they used to) did get a die that was missing the mintmark and used it, it would be assumed it was from Philly anyways and be no added value, the only way you&#039;d be able to tell the mintmark was missing would be on a proof strike and knowing it should have an S on there for where it was made. </p><p><br /></p><p>for cents, Philadelphia lets say, they made 3,542,800,000 cents in 2019.&nbsp; the die pair strikes about 12 coins a second per machine, 720 coins a minute, 43,200 cents an hour, and they change dies ever 6 hours approximately around 260,000 strikes. </p><p><br /></p><p>at that rate it would take around 13,600 die pairs for the annual circulation production of Philadelphia alone as an average, if all those conditions are met and rates and times are followed. I don&#039;t know for sure, and there&#039;s always variables, but it&#039;s safe to assume the number of dies per mint each year is A LOT and a lot to catalog, and then do this also for Denver, and then I guess, exclude all those dies, and pairings, and be left with possible &quot;West Point or San Fran&quot; strikes? </p><p><br /></p><p>It&#039;s an impossible task really for just one year, certainly impossible to do it every year, especially considering the Date and mintmarks are now on the master hubs so there&#039;s even less variation, and each mint gets their master dies from Philly ready to rock and roll to produce hubs and then working dies.[/QUOTE]</p><p><br /></p>

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