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 Replies: 15 / Views: 553 |
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Press Manager
 United States
1420 Posts |
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Forum Dad
United States
24150 Posts |
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Moderator
United States
15395 Posts |
That is awesome.  Take a look at my other hobby ... http://www.jk-dk.art |
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Moderator
United States
95018 Posts |
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Moderator
United States
187702 Posts |
Amazing!  |
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Pillar of the Community
 United States
1259 Posts |
Fantastic find. Never seen one before.
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Bedrock of the Community
United States
25004 Posts |
Wow!
Inordinately fascinated by bits of metal with strange markings and figures
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Bedrock of the Community
United States
73798 Posts |
Cool error coin! Errers and Varietys.
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Pillar of the Community
United States
572 Posts |
Surprised PCGS would make such a simple mistake.
120 coins per minute means it would take 70 presses running 24/7 an entire year without stopping to mint 4.5 billion cents.
A quick google search shows those machines churn out approximately 750 finished coins per minute, which is an astounding number, and that Philly has only about 60 operating at any given time.
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Moderator
United States
187702 Posts |
Nice catch. This is a copper coin, from at least 44 years ago. The standards have changed, especially as relief has been lowered a lot to allow much higher speeds and mintage numbers. Current presses output 750 coins per minute. Though, I am not sure how they still made billions back then at slower speeds.  Quote:
A circulating coin press strikes 750 coins per minute. The Philadelphia Mint produces 47,250 coins per minute if all of its 63 presses are operational. The Denver Mint makes 40,500 coins per minute with its 54 coin presses. That results in millions of circulating coins each day. https://www.usmint.gov/learn/produc...n-production |
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Pillar of the Community
United States
1243 Posts |
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Bedrock of the Community
United States
25004 Posts |
I wonder how many such coins get rejected by a sorting mechanism and sent off for scrap.
Inordinately fascinated by bits of metal with strange markings and figures
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Moderator
United States
187702 Posts |
Quote:
I wonder how many such coins get rejected by a sorting mechanism and sent off for scrap. None of the ones from Mint Sport.  |
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Pillar of the Community
United States
5770 Posts |
That is a scrumpscious looking error.
750 coins doesn't divide up evenly for a 4 head coin press though.
720 is the number of coins per minute for a four "head" coin press is what turned up for me online.
720 coins ÷ 60 seconds= 12 coins/second/four head coin press
12 coins/second ÷ 4 heads= 3 coins/head/second
So each 4 head coin press can produce 1,036,800 if it runs for a full 24 hrs.
Any way you slice it that adds up to a lot of machines producing a lot of coins. And thats only one denomination.
Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Moderator
United States
187702 Posts |
Quote:
720 is the number of coins per minute for a four "head" coin press is what turned up for me online. Yes, I found the same claim, but could not confirm the source which is why I posted the 750 I found on the US Mint website.  It could be that it is 3000 per four minutes, with strikes beginning at the end of one minute and into the start of the next. |
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Pillar of the Community
United States
5770 Posts |
Good point Jbuck. That does divide up evenly and a longer time frame is probably more accurate for a count.
Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Replies: 15 / Views: 553 |
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Posted 01/27/2026 06:41 am
