Thought to be Damaged Coin turned to Cool Find...

there are so many variables that it varies ...

The US in their ever attempts at findings cheaper methods to produce coins go through a treasure trough of test/information on coin production.

The dies are hardened steel .. which of course SLAM against little pieces of new metal over and over again.

They have reviewed alternative methods of production, such as:


so they review processes




thus they track die and production processes. They also use various methods of lubrication ... grease (or other lubricate) dies.


so you get coins that have simplified designs -- like those certain year nickels and the shield cents


additional ...

and more ..


and so on ....


I could go on ... but that one document I just checked is 379 pages long.

 

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I only wish I could like this post more than once.

 

Clawcoins, those tonnage figures you listed are HUBBING tonnages, the maximum pressure used in the hubbing of the steel dies not the striking of the coins. Tonnage pressure for striking cents is around 40 tons.

And the die life of a cent die is between 1 and 1.5 million strikes. Nickel dies on the other hand last 300 to 500 thousand strikes. The other denominations around 750,000 strikes. So a cent die lasts about 28 hrs, a nickel die about 9 hrs, and the other denominations about 17 hrs. So you swap out the cent die each day, the nickel die each shift and the other denominations every other shift.

 

Hello everyone, thank you for input and don't worry about "not error". I just want to know how it happened and I will never be offend if its a PMD coin.

Based on my iPhone X is limited with up-close as always. That's why I need microscope camera. I went through my boxes and found it.

Here's up-close image. Here's my original question, why the planchet doesn't cave in when it pierced? Both sides are surround the foreign object. Unless the object was projectile into the coin and cause bloat in both sides?

 

You have any idea rows of dies per setup. Do they mount the dies sepertly or mount them in a (say 50 ) holder. I know. Watch the movie. Right

 

You scratched

 

They are minted one at a time.
That allows for the fast presses.

 

still looks like the tip of a small nail. The metal was moved out. And then probably over time smoothed from circulation.
Try digging it out.

It looks very similar to my kids trying to nail a hole into a coin and the tip breaks off. If I had a picture ... I'd post it. I taught them just to use a drill when they were doing their artsy stuff.

 

Then it's a tiny nail because it's a really small object.

Let me wrap up my thread with other four cool "real error" coins...

1951 S Roosevelt Dime Reverse Lamination


1942 Mercury Dime Reverse Lamination


1942 S Mercury Dime Reverse Mint Slanted


1964 Roosevelt Dime Good Distance of Die Crack, I like this one.



Thank you for stopping by!

 

Do you and Yawkey still own the Red Sox

 

Kool stuff. Wish they were prettier

 

Thanks for not. Way over my head. Can only tell metals if i drop them

 

Thanks. Was wondering about change overs (make readys) your reply is exacty what i was wondering. You get a best answer today. Thanks for reading my mind.

 

I'll work the cent line Thank you

 

My brother in law works for American Brass and the make cup for bullets. About say 100 per hit i think. So your saying 1 cent per hit.

 

Wait a minute. Their stamping are round. Still more the 1 per hit