One of 7 Gould Incorporated designs made circa 1976 as a replacement for the large Eisenhower dollar. This one is a 2014 discovery by NGC combining the obverse from P5400 with the reverse used on P5430.
For additional information on modern dollar patterns, see Mike Wallace's article on modern dollar patterns by clicking here.
This design is known as follows:
Nickel with plain edge P5422 with several known.
Photo courtesy of NGC.