Is this a rare error? *******PICTURES****** -Half dollar

[BuffaloBoy]

Hi all, I have come across this half dollar, looks to be in AU shape minus all the small scratches in it, beautiful coin.

The coin looks to be worn, as you can tell, but i know it is an error imediately. Any ideas on what type of error it is? the value of a coin like this? My guesses is a grease filled die, but have no clue on the value in this shape. Any help or suggestions are greatly appreciated, thanks!!!

 

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[enamel7]

Grease filled die, no added value.
HH
enamel7

 

[Emperor Findus Cladius]

Ditto, grease filled die. Relatively common error, I have found quite a few of them, and throw them back into the wild.