One of 7 Gould Incorporated designs made circa 1978 as a replacement for the large Eisenhower dollar.
For additional information on modern dollar patterns, see Mike Wallace's article on modern dollar patterns by clicking here.
According to Roger Burdette in his book "Private Pattern and Related Pieces International Nickel & Gould Incorporated", these were struck on planchets that started with grooved edges and when struck were placed in a plain edge collar. Some coins still show the grooves but the intent was for these to have plain edges.
This design is known as follows:
Silver P5400 / RB1370 which is possibly unique
Titanium (powdered metal) P5401 / RB1450 One was offered as lot 2061 in the Bowers and Merena's 3/97 sale.
Nickel P5405 / RB1360 with at least 4 known including one in the Smithsonian per Pollock.
Copper P5410 / RB1355 with at least 4 known including one in the Smithsonian per Pollock.
Brass P5415 / RB1350 with at least 5 known including one in the Smithsonian per Pollock others from Bowers and Merena's 8/05 sale illustrated below and lot 2062 in the Bowers and Merena 3/97 sale.
Iron P5420 / RB1335 with at least one in the Smithsonian.
Photo courtesy of Heritage.