It appears these were sold in the 1950s and 60s.
Photo of real ones.

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Youtube video which shows a few shots of them in action, but it’s not the exclusive focus of the video.
It appears these were sold in the 1950s and 60s.
Photo of real ones.

![]()
Youtube video which shows a few shots of them in action, but it’s not the exclusive focus of the video.
All I can see is a finger remover…
I think crushing is more likely, builds character.