Examples of this design are known as follows:
Aluminum with plain edge J561/P622 It is believed that 100 of these were struck per J. Colvin Randall.
Aluminum with reeded edge J562/P623 About a dozen are known.
Copper with plain edge J563/P624 Less than half a dozen are known.
Copper with reeded edge J564/P625 Less than half a dozen are known.
Copper obverse hub trials JA1867-8/P3308 and JA1867-9/P3311 as well as lead obverse JA1867-10/P3314 and reverse JA1867-11/P3317 die trials are also known to exist.
Photo courtesy of Bowers and Merena.