Folding Coin In Bottle Half Dollar
Folding coins have so many uses that it would be impossible to list them all.
The most popular is the coin in the bottle.
Magician magically places a coin inside a bottle being held by a spectator and then removes it and passes it around for examination.
A real mind blower!
There are many other uses for folding coins and a lot of books are available on the subject.
Also available - half dollar profile, quarter.