I believe your thinking of a drop-in ElectroType where one shell and the edge are made together and the second shell drops in from the top? The one I have is the much cheaper version: two shells glued to a core, and then some some edge material applied to the edge.
Did you see all that fuze at the date the stars and just about anything else that fuzz could cling to? I don't know what's that about. I guess it has something to do with the process. There is something else weird but it doesn't show in the scan. The fields "swirl" counter clock wise. I'm scratching my head a lot about that. But there doesn't seem too be much information about ElectroTypes.
There was a cast forgery of a 1796 Bust Half that apparently fooled the pros. The funny thing is the host coin had some lint that was struck into it and that lint transferred to the counterfeit in the form of raised squiggly lines.
One of the ANA reports that documents it says: "The ANA Certification Service does not recommend heavy reliance on pedigrees; in the past six years the counterfeit half dollar illustrated here has appeared in two major auctions, prior to which it resided in a rather famous collection."
