This clever little beauty invented by Ralph Elias “Eli” Hackman c. 1920 and beautiful crafted in mahogany by Floyd Thayer c. 1921 and appeared in various forms from other dealers over the years. It should not be confused with a sure-shot die box which looks similar but uses a very different method.
The supplied effect is easy to do and in fact at first I didn’t believe it would work, but it works perfectly if you follow the instructions exactly as provided. You do need to be able to add and subtract from 21, but otherwise nothing is added or taken away.
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