Morgan's quarter eagle design. These were struck on thinner and slightly wider 20.5mm vs 18mm planchets than the regular issue.
Examples were struck as follows:
Gold J1566/P1756 with supposedly 2 known.
1) Newcomer, Col Green, Boyd (via BG Johnson 6/23/43 invoice), Judd, Wilkison, southern collection as NGC67, Simpson collection - PCGS67
We actually believe that both pedigrees represent only one coin.
Copper J1567/P1757 with about a dozen believed to exist, several of which have been gilted.
This design was also copied into a half eagle J1568/P1758.
Photo courtesy of PCGS.