I thought that Hennings Nickels were illegal to sell and must be confiscated....

[CoinHuntingDrew]

..by the government for destruction?

1944 Henning No P Jefferson Nickel Non Silver War 5 Cents Wrong Planchet Coin | eBay

 

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[Mackaydon]

They are counterfeits, but strangely enough people do buy them, sometimes rather openly.
As counterfeits, they are of course illegal, but enough exist that there is a market nonetheless.
Don......