Avg Strikes Per Die? - Coin Community Forum

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Author	Replies: 7 / Views: 1,067
seattleMD Valued Member United States 405 Posts	Posted 05/15/2008 5:40 pm How many coins does a business die strike on average before it is reviewed and replaced? I'm assuming it differs based on denomination since the metal hardness will determine how much wear each strike has on the die. I'm trying to get a feel for how many coins make it into circulation for an average error variety. Report this Post to the Staff

mikediamond Pillar of the Community United States 2734 Posts	Posted 05/15/2008 7:40 pm For State Quarters it's around 1 million. At a rate of 750 - 800 coins per minute, the average die lasts 24 hours. Naturally, some fail well before this. Error coin writer and researcher. Report this Post to the Staff
biokemist6 Bedrock of the Community United States 12437 Posts	Posted 05/15/2008 10:28 pm I have a Colorado State Quarter die(Denver naturally) and it has the die stats on the CoA. My die struck 145,483 before being retired due to cracking. Going by Mr. Diamond's estimate, my die failed relatively early in its life. Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 05/20/2008 04:30 am Mikes figure surprises me a little. The last figures I saw were cent 750,000, five cent 300,000, dime quarter and half about 500,000. Those figures are from the 1980's though so it may be a little higher now. I know I have heard figures approaching a million for the cent, but not for the quarter. Report this Post to the Staff
coppercoins Pillar of the Community United States 7629 Posts	Posted 05/20/2008 06:56 am I thought cent dies were the highest at 500,000-750,000. Nickels were usually between 200,000 and 250,000. Dimes between 400,000 and 500,000. Quarters between 350,000 and 400,000, and half dollars between 200,000 and 250,000. Proof dies, no matter the denomination, were used for 2,000-5,000 coins. This is what I've come to recognize as truth over the years form the different sources I've read. Report this Post to the Staff
biokemist6 Bedrock of the Community United States 12437 Posts	Posted 05/20/2008 08:53 am Is it possible the the recent(within the past decade) upgrade to Schuler horizontal presses has extended die life? Report this Post to the Staff
coppercoins Pillar of the Community United States 7629 Posts	Posted 05/20/2008 12:33 pm It's possible, but not by much. Still takes the same pressure to mint coins. Report this Post to the Staff
seattleMD Valued Member United States 405 Posts	Posted 05/20/2008 3:35 pm Old article but great read and hints at Schuler presses lasting much longer than older Bliss presses. Differing not only by denomination, but in the case of quarters, by the design, and by how well the operator maintains the machine, it says dies last anywhere from 70k to 2 million strikes. Interestingly they throttle the machines at only 750 strikes per minute even through they are technically capable of 850. http://www.scvhistory.com/scvhistor...age0206a.htm Report this Post to the Staff
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