Nickel 1997 D, Wrong Planchet?

Dimensions; Dia. 0.818" Tickness 0.059" and weigh 3.68 Grms.
Difference between total flat lower area and High spots inside is 0.010" on both sides (Oberse and Reverse). Means 0.020" total between Flat lowers And High spots.
My though is that. The planchet was the wright material but too thin.

 

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It appears as if the coin has spent some time in the ground and suffered from corrosion.

 

NO CORROSION. This 1997 D It's shine like other nickels. The normal Thickness of a regular Nickel is 0.073" and The normal Diameter of a regular nickel is 0.838"
So this is smaller in Diameter and Thickness.
The weight of a regular one is 5 Gr. but this 1997 D only has 3.68 Gr. And all those lines you see in there show the normal feeding direction of planchets to the die. (See sample).

 

Looks like an acid bath to me....letters are thinned and mushy. 100% sure it's not an error coin.

 

26.4% material removed that way? later I'll try with other nickel to see what happen.
Because those lines on the Oberse and Reverse show the same path of directions. That means "movement" was involved.

 

Yes, it could very well be from acid. Here's an example of a cent having the same done to it to make it fit a dime machine. I kept it because I still think it's cool and has its own history/intrinsic value.

 

Remember that acid is how they bring out dates on buffalo nickels, so just because it's been dipped in acid, doesn't mean it destroys the look of the coin.

 

The appearance after use of an acid, is like your penny. The image Quality is loosed. After work any way I'll visit a friend wish is specialist in chemistry.
This morning I asked to two mechanicals Engineers about corrosion. And they said IT'S NOT CORROSION IN THERE.
WHAT I THINK IS THAT. The Anealing, washing and drying process was for planchets thicker and bigger in Diameter than this one. That's why; the material was too weak when passed by the Pre-striking area. "may be".

 

This is what a TRUE THIN planchet would look like. I really don't understand what you mean by "normal feeding direction" lines? Your coin looks nothing like a thin planchet. I don't think it's an error but more like Post Mint Damage!

 

As others have said, this is an acid job.

 

Some coins have more remarkable planchets feeding direction lines. In most of them these are Not notorious. The lines in these Nickel are pointing exactly that direction. "On both sides, Oberse and Reverse. There's movement involved.

 

So...what colonial coin die/planchet/whatever did this come from?

 

There are two more samples of a thin planchet showing the Feeding Die Direction

 

Feeding Die Direction..... That's a new one on me...

 

Do You think some body "using his hands" put each planchet inside of the Die? We're talking about millions of planchets. A "MECHANICALL" WAY IS USED. And that movement has a "direction". related (all ways the same), with the Vertical or Horizontal position of the image Impressed.

 

I agree, looks like acid, which would explain the uniform removal of metal and thinning of the lettering.
Could also have been dropped into a deburrer, probably not though.

 

The normal reaction in the use of Acid is smooth surfaces, and molecular uniformity. The sharping of the scratches or lines disappear. In other words ACID DOESN'T MAKE SCRATCHED LINES. Acid cause scratched lines on metals disappear.
Before I putted this post in this forum; I was worry about some members thinking in MACHINED SURFACES. Any way. Thank for all your opinion.
The cent of Seattlite86 is the most perfect sample of Real Acid Reaction.

 

Acid sometimes exposes the "grain" of the coin, a pattern estabished during rolling out of the coin metal strip.

 

These pictures you used as a sample are NOT thin planchets. They are SPLIT PLANCHETS! Bad example Carlos. Like Mike Diamond Said..the grain was exposed due to acid bath!

 

Sorry Mike. The lines (scratches) on this Nickel are Not showing the grain of the mat. coil. But The 60 Deg. grain (direction) the planchets arrive the Die. In some coins You can see that pattern in others nooop.