Having the extra expense of more dies may have damaged Henning’s profit margin; after conviction he supposedly claimed (or complained) that he actually lost money overall. Sources say that the blanks themselves cost him close to 3.5 cents each, so there wasn’t much room for profit to begin with.
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Bidder #3 topped out at $555.88.
What did Henning do after he got out of prison?
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I found this interesting:
https://medium.com/collectibles-history-knowledge/the-strange-story-of-the-henning-counterfeit-nickels-d19fecdb2d99
Thanks to @BillJones for the following article on Henning Nickels!
This is the first time I learned Francis Henning was a retired engineer. Do we know what kind of engineering and where he worked?
It was published in the 1999 issue of Clarion by the Pennsylvania Association of Numismatists and is on the NNP.
https://archive.org/details/clarion16n1penn/mode/2up