The following is the second of 2 known half dollar sized designs. This one employees the same seated Liberty design similar as on JC1861-17 but with a reverse showing the eagle in a cartouche.
So far this is only known in white metal and/or lead with at least 2 known, both ex Ford, StacksBowers 8/13.
We have saved JC1861-20 for a silver example should it ever turn up.
Photo courtesy of StacksBowers.