Raised curving mound under motto 1990 lmc

This lmc has a curving raised mound under the motto.
The lettering shows no signs of damage, but sit atop of
the raised curve.

 

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I wonder too

 

I believe it is a form of die deterioration on one of the Crappy Zincolns. Right or wrong @paddyman98 ?

Chris

 

What puzzles me is there is no corresponding groove
or trough on the reverse in that location. For example
a damaged or altered planchette prior to going into
the press. Hmmm ?

 

The reverse rim looks odd too. Starting at "one" and going up past "united" and beyond. Like a partial
second rim.

 

It takes two dies, obverse and reverse, to make a coin. The deterioration of one die has no effect on the other die.

Chris

 

Tis very common on certain years of Zincoln. Meow sees that anomaly all the time. It happens so often it is not very special in any way.

 

Appears to be a ridge ring.

 

Very common on Zinc Cents.

 

It is called design devouring die wear.

 

The thin soft copper layer + the mushy zinc underneath + the dies used way too long = crappy Zincolns with distorted surfaces.

 

passed by so many of these now...

 

It is very common on Zincolns, but it does appear sometimes on other coins. I don't know if it is caused by unusual wear to the die face, or a sinking of the die face from a problem in hardening the die, but it is the normal result of an overused deteriorating die. It is not an error, it is a die state. (It isn't a die stage because it happens gradually over time. It isn't a case where it isn't on one coins and then it is in the next one struck.)

 

That happens often. Old die i believe. Seems like one in every roll of cents. It's that common

 

Is that completely true? Just asking

 

Oh please don't start thinking kentucky. Cuz when you do. These threads start to get crazy

 

Oh no. Now a DDDW

 

How should I know! It sounded good!

Chris

 

I resemble that remark

 

I do remember one of your thought questions. Ended up like 10 pages. But was fun