1940-D Jefferson Nickel PCGS MS67FS (What is on Jeff's Head)

What is the circular mark on Jefferson's forehead. This is a gorgeous full step MS67 1940-D, but what is that on his head. If PCGS graded the coin MS67, they must feel that is was done during the minting process or is a die variety.

I don't know of any die variety for the 1940-D. So, what is that circle on Jeff's forehead?



http://coins.ha.com/common/view_item.php?Sale_No=29053&Lot_No=24104#photo

 

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Is it on his head or on the slab?
Otherwise I have no more suggestions.

 

My guess is watermark or hit or on/in the plastic.

My guess is watermark or hit or on/in the plastic.

 

it almost looks raised to me. im not sure

 

I've never seen that before. The edges appear to be raised. I would guess that some tiny circular piece of garbage either got on the die or was imprinted into the die through some type of clash mechanism (though not a true clash).

How very strange.

 

Circle? I don't see no circle. Gotta draw me a picture Paul, I don't see what you mean.

 

Orinial thoughts were condensation droplet. IDK

 

If moisture were involved, I would have expected a change in color or tone.

 

I meant on the slab. Sorry, should have been clearer.

 

Not sure just what it means, but they changed the pic at Heritage. The circle is still there, but not so obvious.

 

Wow, they did. That's kind of sketchy isn't it.