The following casting was the subject of a recent article in the June 14, 2004 edition of Coin World by Paul Gilkes. According to uspatterns.com member Roger Burdette, who is doing extensive research on early 20th century patterns, this casting or galvano was prepared circa February 1917 by Herman MacNeil.
It was found along with a obverse casting by an anonymous collector at a garage sale. It is believed struck in bronze and is possibly nickel plated.
Differences between this and the regular type II reverse are in the arrangement of the stars. This model shows 2 stars in the left field and one star in the right field instead of under the eagle as on the regular issue.
Additional information can be found in Stacks 5/08 and Stacks-Bowers 8/11 ANA sales.
Photo courtesy of a private collection.