What's the cause of these marks on a Shield nickel.

howards

@Insider2 said:
@howards

I may have asked this a few months ago, have you written a book I can buy?

Not a book, but a computerized shield nickel attribution tool. Read about it here:

http://www.shieldnickels.net/snv/snv.html

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I did contribute heavily to Dave Bowers' Guide to Shield and Liberty Nickels and to the shield nickel section of CPG.