I was just reading about these in the coin world... Bill was that your article? I don't remember... Is that a known die pair for being an inverted MM piece?
I've got two links that have some info. http://www.lincolncentresource.com/Featured/1946Sinverted.html http://www.traildies.com/id61.html
Nice inverted mm and a rare one there;s nothing new about this coin it;s been around for a long time alien ZEC