Although described as regular dies trial pieces in the literature, this is actually a backdated fantasy piece made to complete off-metal sets of this year which included the quarter, half and dollar with the motto "In God We Trust" used on regular coinage from 1866 to 1891. This was actually made sometime between 1869 and 1875.
This piece was made from the 1869 hub having broken "S" in States and from an 1869 reverse hub with the die scratch angling upwards from the right wreath into the center.
Examples are known as follows:
Copper J333/P405 with about a half dozen known.
Aluminum J334/P406 with about 4 known.
Photo courtesy of Heritage.