The planchet is feed into the coinage press and rest inside the collar on the anvil die (Reverse die). After being struck, the anvil die moves upward, raising the coin. Now the coin is suppose to exit the coinage press and go to a collecting area.

If the coin does not eject properly and spins, falling back inside the collar. The second strike is totally at random. It is possible for the coin to settle back inside the collar and be struck the second time with opposite dies. This is very rare, put it does occur.

Next is a very rare example of a on center flip over double struck coin. It is a 1943 S steel cent. We would like to thank Joe Mish for allowing us to photograph this rare beauty.

You may click on the smaller images to better view the double striking of the coin.