Most counterfeit's go for $20's as its the most used bill. Why not counterfeit a $100 as you'll make more? Some counterfeit's will reproduce a less common coin or bill as your less likely to suspect its anything but genuine. One of the best counterfeiters ever was a young man that gold plated the first year of "V" or Liberty Nickels. In months the Mint added the words "Five Cents". He was caught but never charged. He was mute and never stated it was a $5.00 gold coin. Merchants failed to take notice as it was a common coin.
So is this a reverse over-struck counterfeit? Or would an O/S make it PMD? Or was it cast? It doesn't appear as a cast counterfeit, given the smoothness of the fields and relative lack of bubbling.
Gotcha. Funny that you mention the racketeer nickels. Took me twenty years to track one of those down. Among my favorite coins.
Took me awhile but not that long. And I got a real nice one. Circulated but clean and all plating in tact.
I didn’t have an Internet at my disposal at the time....... Now with the availability of cool stuff and the ease of access to it. I better cut up my credit card.....