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.
Examples are known as follows:
Nickel P5423 / RB1050 with at least 2 known including an example in Heritage 4/18.
Anodized Titanium (powdered metal) P5424 / RB1060 giving this a copper color with at least 5 known including an example in Heritage 4/18.
Titanium (powdered metal) P5425 / RB1055 which is the most common of all of these with at least 18 known. Six were in the Bowers and Merena 5/97 sale.
Photo courtesy of Heritage.