The helmeted Liberty design executed by William Barber. This was apparently inspired by a drawing prepared by Christian Gobrecht in the late 1830s per Pollock. To view this drawing, click here.
Only one example is known:
1) Linderman, Woodin-1914 ANS exhibit, Farouk-Sothebys 2/54, Dibello-Stacks 5/70, Champa-B/R 5/72, Sieck-81 ANA, cleaned, chocolatized, Tangible Assets, Teletrade 3/3/93, ANR 7/05, Simpson collection - PCGS65BN.
This design was also struck in silver J1528/P1696 with only 4 known.
For pedigree information on this and all 1877 half dollars, click here.
A complete reverse die trial in lead JA1877-3/P3425 is also known.
Photo courtesy of American Numismatic Rarities.