Susan B. Anthony blank

My girlfriend has in her safety deposit box a coin she found as a bank teller back in the late seventies. They got a shipment of Susan B. Anthony dollar coins in from the mint and while she was rolling them, she found one that had not been stamped. It is a blank. Does anyone know what it is worth or a place I can find the worth on the net?
Thank you very much

 

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according to the redbook, around $85. i'm not good with errors like that, but thats what the redbook says.

 

a nice find, and an $84 increase in value not too shabby.

 

alabama:
Welcome, and a nice find.
I think $85 is tops, if it hasn't been cleaned or damaged.

 

Thank you all very much.

 

It could be worth more or less depending if it is a type I or II blank

 

lol.....how can you tell if its type one or type two if its a blank?

 

If there is a slight 'upset' to the rim, it is a type two.
If the planchet looks flat and even around the 'edge' then it is a type one.

 

Thanks Frank, I never knew that you could tell the difference if the coin was blank. This shows you how much I know about errors.

 

indianhead:
The blank is first put thru an 'upsetting mill' to raise a small rim about the outside.
then it is struck.